I have heard that there are some technical problems with running Baldur's Gate on a computer with Windows 7, but the Virtual Machine I have sucks, because the mouse pointer is always flickering. What I want to know is, if I install Baldur's Gate, will my computer have any problems?
You can try
Baldur's Gate: Enhanced Edition just released on Steam: http://store.steampowered.com/app/228280/
It has updated graphics and works perfectly on Windows 7
It should run fine if you run it in compatibility mode, like the others said.
However, if you have an NVIDIA card, you may experience a graphical glitch which makes the covered parts of the maps look odd.
This link has some workarounds for it (culminating in an unofficial patch if all else fails - which I have used and works a treat) http://blog.yimingliu.com/2008/04/16/baldurs-gate-1-graphics-glitch-and-disabling-nvidia-hardware-acceleration/
Hope this helps!