in normal cases you don't need Winzip to zip or unzip, because zip-files (named: compressed folders) are fully supported by Windows XP. So this behavior wouldn't be a problem.
If you feel you need a separate program for some reason you didn't disclose, try 7Zip or Tugzip. Both are free (while Winzip isn't) and might contain all functionality you need.
Whenever I use winzip to Zip or Unzip it only opens IE which starts to flash without stop.
I then need to restart a new session.
No Virus I scanned.
I re-installed Winzip.
I've read of one other instance like this online but no one had a solution