I found both under "Other Drivers"-- That ok?
Yes, if you mean "Other Devices", and I'm pretty sure, they had yellow exclamation mark next to them.
What should I set my virtual memory at?
You should set it to 1.5 times of your RAM amount.
Say, you have 512MB of RAM, your virtual memory should be 800MB (just to be rounded number). Set min, and max VM to same 800MB.