Hi mills, welcome to the MSX world.
old-computers webpage has specs for a lot of MSXzes.
http://www.old-computers.com/museum/computer.asp?c=618
But there's two mistakes for yours there:
1) AFAIK it don't have the internal FM-PAC.
2) It will only be able to run MSX-DOS2 if you expand its memory to at least 128KB of RAM. MSX-DOS2 is a must if you plan to use a hard-disk.
With its original specs, you will be able to play any MSX1 and MSX2 cartridge games, including Metal Gear 2.
You can use any MSX-standard expansions with it, including:
- FM-PAC (aka MSX-Music), which is a soudcartridge with 9 FM channels
- Memory mapper. Its the standard memory expansion, having up to 4MB. Connecting more than one at the same time allows your MSX to have up to 16MB of RAM. Not bad for a 1985 8bit machine heh?

- floppy drive interfaces. Once common, has become rare and expensive. Floppies are also a crap currently.
- Hard-disk (and cd-rom) interfaces. Can be either SCSI (expensive and rare nowadays) or IDE (cheapper and available new). SCSI has better floppydisk emulation though.
- Memory-card interfaces. Can be either compactflash or SD/MMC. I personally recommend the SD/MMC card interface from Leonard Padial. Its the better MSX disk interface up to now. Its fast, emulates floppydisks very well, supports MSX-DOS1 and MSX-DOS2. The only drawback is that you'll need to buy a cartridge enclosing separately.
More info on the SD/MMC interface can be found here:
http://www.msx.org/LPE-MMC-V6-and-DRSDMMC-driver.newspost4604.html
> Where to buy games
You can easily find them on ebay. Just search for "MSX game". Try ebay.nl also.
> If I can play euro games if they are in english on my system
Most euro games requires at least 12KB of RAM. The vast majority of them are in english.
Some japanese cartridge games (mostly from konami) will detect you have a japanese MSX and display japanese texts. The only way to circumvent this is to buy a brazilian MegaRAM or a european mega-flash-rom and use the its software to set the desired region when loading the ROM from the disk. Note: both cartridges allows you to load ROM images from cartriges on a real MSX.
> what games are best
Well, this is a loooooong discussion. For my tastes, I can personally recommend you those above. But try them on a emulator (blueMSX or openMSX) before buying to see if you like it:
MSX1 cartridges:
- Penguin Adventure
- F1 Spirit
- Nemesis (aka Gradius)
- Nemesis 2
- Nemesis 3, episode II
- Salamander
- Parodius
- Super Laydock
- Zanac
- Zanac 2
- Knightmare
- Maze of Galious
- The Castle
- The Castle Excellent
- Eggerland Mistery
- Eggerland Mistery 2
- Alpha roid
- Warroid
- Penguin wars
- Konami's ping-pong
- Konami's Soccer
- Road Fighter
- Hyper Rally
- Kings Valley
- Year Kung Fu 2
- Elevator Action
- Rally X
- Kaleidoscope Special
- Pay load
- Bank Panic
- hang on
- Hero
- Moon Patrol
- Hyper sports 1, 2 and 3
- Golvellius
- Galaga
- Bosconian
- The Goonies
- Gyrodine
- Arkanoid
- Star Soldier
- Snake It
- Guardic
- Hyper Olympic 1 and 2
- Kung Fu Master
- Lode Runner I and II
- Magical Tree
- Mopi Ranger
- Konami's Qbert
- Operation Wolf by Toybox
- Pitfall I and II
- Red Zone Enhanced
- River Raid
- Thexder
MSX2 cartridges:
- Space Manbow
- Aleste (best with MSX-Music)
- Mon Mon Monster (best with MSX-Music)
- Mr Ghost
- 1942
- Xevious (best with MSX-Music)
- Arkanoid II
- Lupin in the Castle
- Bubble Bobble
- Contra
- Dragon Slayer IV
- Fantasy Zone II
- Ganbare Goemon
- King Kong 2
- Hinotori
- USAS
- Quarth
- Metal Gear
- Metal Gear 2
- Penguin Wars 2
- Tetris
- Vampire Killer (you already have it)
- King's Valley 2
- Pennant Race 2
MSX2 disk
- Aleste-2 (best with MSX-Music)
- Columns (best with MSX-Music)
- Puyo-puyo (best with MSX-Music)
- Golvellius-2 (best with MSX-Music)
- Herzog
- Super Cookies (best with MSX-Music)
- Runemaster 2 (best with MSX-Music)
- Xak 1 and 2 (best with MSX-Music)
- Xak - Tower of Gazzel (best with MSX-Music)
- Fray (best with MSX-Music)
- Akin (best with MSX-Music)
- YS 1, 2 and 3
- Bank Buster
- The Tenor
- Bombaman
- Breaker
- Bomb Jack
- SD-Snatcher
- Snatcher
- Daiva 5
- Disc Station (any) (best with MSX-Music)
- Dragon Slayer 6 (best with MSX-Music)
- Quinpl (best with MSX-Music)
- Famicle Parodic 2 (best with MSX-Music)
- Nyancle Racing (best with MSX-Music)
- Feedback (best with MSX-Music)
- Psycho World (best with MSX-Music)
- Fire Hawk - Thexder 2 (best with MSX-Music)
- Gorby's Pipeline
- Konami Game Collections
- Pac-Mania (best with MSX-Music)
- Starship Rendvouz (best with MSX-Music)
- Undeadline (best with MSX-Music)
- Youma Korin