IKnowWazzup,
Your processor is fast enough.Y our problem could very well be with your graphics card. Your 1G Pentium III is fast enough as Hoster runs fine on an 800 MHz machine.
Hoster needs a graphics card that supports DirectX 8.1 or higher.
My suggestion is for you to dissable your onboard graphics and install an ATI card. There is a 99.9999999% chance this will solve your problem.
Good luck,
Jon