I had this problem when I used Ad-Aware to remove a spyware called "Websavings"
The spyware was gone, but Ad-Aware failed to completely remove the startup reference to it.
If this sounds like your situation, removal instructions can be found at:
http://www.mvps.org/sramesh2k/WJViewError.htm
If, after reading that web page you still have questions, please let us know. Please be as specific as possible.
Guy