APPCRASH, please help!

hi Everyone,

I just installed Kingsoft Powerword on to my new computer. Now I am getting this message. I tried to uninstall this program from the control panel but I cannot seem to open the CP. The message keeps popping up. I can use the internet and my outlook is fine. I just can't open my files or the control panel. Please help. Thanks

Problem signature:
Problem Event Name: APPCRASH
Application Name: explorer.exe
Application Version: 6.1.7600.16450
Application Timestamp: 4aebab8d
Fault Module Name: StackHash_4a95
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 000007fefd180068
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033
Additional Information 1: 4a95
Additional Information 2: 4a951d2324a07c615f54e0a399caacb5
Additional Information 3: 5d76
Additional Information 4: 5d76505060cfdd0437b4a1e6d7f789e1

how can I run system restore? what do I do?

thanks all for your suggestions. I had it fixed. The only way to remove the software I installed was to press F8 when rebooting the computer and then uninstall the program. I tried system restore but the pop up window wouldn't allow me to get in to the control panel.