Explorer.exe – Application Error

The workstation is a Dell Optiplex Gx110 with 512 MB of RAM. The OS is windows NT 4.0 workstation with service pack 6.a

When I right click on drive c or any folders I am getting the following error:

The instruction at ” 0x77f6754b ” referencedmemory at ” 0x00000034 “. The memory could not be ” read “. Click on OK to terminate the application. Click on CANCEL to debug the application.