@Durwyn, BG2 can use 800 x 600, among other resolutions. No other game is necessary, though BG2: Throne of Baal is an excellent add-on you may want to consider. (It includes some new quests, a new party character, a bunch of items, new spells and abilities, and raises the experience level for all professions.) The game is particularly attractive for the interactive dialog and actions of party members--including deadly battle, on occasion, when differently aligned folk differ on points of honor.
I'm sure you'll be pleased with that wondrous Dwarven fighter, Korgan, who may be found in one of the land's many fine inns. Welcome, and enjoy!
