Permenant 100% CPU

Hi,
I was hoping you could help with my pc response problem. I have a PII 350 and I 128MB of memory. I installed MEMTURBO 2 the other day and my CPU usage seems to be at 100% at all times even with no applications running. I was wondering if there anything I can try or something I can edit to stop this and increase the response of my PC.

Thanks in advance

Micky