Installation Error; Win98

I downloaded Avast 4! and when I run the setup file I get the following error: An error 82 (00000052) has occured Last performed operation was: extracting main exe. can you help?

Compaq 575
120 mhz
40 gig hd
svga
80meg ram
win98

Last performed operation was: extracting main exe

Check your temp file directory.
This errorcode translates to The directory or file cannot be created.

This most likely means that the temp directory cannot be accessed properly.

It could also be a corrupted installation package. Clear the internet cache, remove cookies, remove temporary downloaded files and download Avast again. See if that solves it.