I'll get him to ask if he still has the CD or what did he do to install it.
Please do. There are some drivers for the above card on the net, but because they come in large number, it's little bit confusing.

As for the mouse, try to find another one, so we can eliminate possibility of bad mouse.

As for copy/paste problem...it's not a short run.
Let's start with this...
Go Start>Run, type in:
sfc /scannow
Click OK.
Have Windows CD handy.
If System File Checker (sfc) will find any errors, it'll ask you for the CD.
If sfc won't find any errors, it'll simply quit, without any message.