Send error report wont go away!

Hello,

I've been having trouble with my interenet explorer, it's quite old software I have (windows 2000 and internet explorer 6). When i try to open internet explorer it immediately pops up with an error box and asks me to send error report. Whether i send the error report or not makes no difference, when I open it again the same message appears. I have firefox and thats working fine. I tried resetting internet explorer to defult settings but it made no difference.

any ideas? please?