Explorer Error Msg

[Charlie Chase]

Have been getting this error message; Win Explorer
encountered a problem, Explorer will now
close.Description of error:
AppName explorer.exe, AppVer 6.0.2800.1221, ModName
msvcrt.dll ModVer 7.0.2600.1106, Offset .000327e8
When I close the error window it causes icons on desktop
to flicker off screen then icons return after about 2sec
Need help