DLL issue with programs

I've got another problem for all you chipheads...

System running Win98SE.
Have been trying to run Ad-aware and it keeps freezing up usually at a file named (SHD401LC.DLL). On the same system, I also have Norton SystemWorks 2003 and when I try to run the Internet cashe cleaning program, that too won't run.

Now, in addition to this system having probs with Ad-aware, there is another system that also will not completely run ad-aware as it too freezes (not sure of the file that it hangs on...).

Have tried re-installing Ad-aware... no luck still hangs.
Rebooting... still hangs.

Thinking that this DLL file might be damaged or corrupt and will need to trash/reformat hard drive... any thoughts from others?

thanks

 

go to lavasoft website and search that file

 

That file is the Shell Doc Object and Control Library - IE 4.01. The file may very well be corrupt and could be the cuase of Ad-Aware hanging up.