Welcome to GameBanshee, Casius!
I haven't encountered many crashes in BG2, but I have a few questions:
Does it happen whenever you go to the map screen or only in certain areas?
Have you downloaded and installed the latest patch?
How much RAM do you have?
What size cache are you using?
How close is your computer to the minimum system requirements (PII-233 MHz, 32 MB RAM, 4 MB video card)?
What kind of video card do you have? Do you have the latest drivers for your video card?
Have you checked with
Bioware to see if this is a known issue?
Do you have the latest DirectX drivers?
I know that is a lot of questions, but a random crash can be the result of any of them (or something else entirely). You might also wait a while longer and see if someone else here has had a similar experience.