Every time that I shutdown my computer from the start, I received the following message:

Explorer: This program has performed an illegal operation and will be shut down. Explorer caused an invalid page fault in module OLE32.DLL at 0187:65f18ae5

somebody knows what is it?, how can I solve this problem?

My pc is a Pentium 3, Dell Dimension 4100, 128 Mb RAM, windows 98 second edition, 30 Gigas hd

Thank you in advance for your help.