Please help. Each time I start my computer I get the following message. Perhaps I removed something from my system but cannot remember.

Error Loading
C:\PROGRA~1\MYWEBS~1\bar\1.bin\MWSBAR.DLL

The specified module could not be found.

Mwsbar.dll is a browser helper object that adds a search toolbar to Internet Explorer. It isn't something that you really want on your system.
Probably it was removed by a spyware program you are running [Spybot, Ad-aware or some other] and traces of it are still in the registry.
Remove it from your startup programs and the error message should stop.
You can also remove the entries from the registry via regedit manually or with a registry cleaning program.

Thanks again, I manage to remove that message from my startup, however I am finding it difficult to remove it from my system entirely.