Go CCIE Go!! - A Cisco Certified Internetwork Expert

Hey Friends
I need help with Dynamips with SP
My system info
Core2 duo - 2.2 GHZ | 2mb L2| 800 Mhz 4gb DDR2 - 800 Mhz Intel 965 Motherboard Win XP
I am running 4 Instances of dynamips for IE lab Topology , Optimized Idle pc

The issue I am facing is after 8 router with All protocols, MPLS TE configured , CPU utilization is 100 % , I am able to use the LAB but I do see the protocols showing strange behavior.
Please provide your valuable Inputs, All help is greatly appreciated
Before writing this mail , I did check the archive on Dynamips - Saw a lot of suggestions for going with Linux 64 BIT but I cant really run linux
Regards
Deepak Ahuja CCIE#19545 R&S