I was having the exact same problem. saw this on another forum and it seems
to have helped! Ive copied and pasted it. I downloaded the update that was
released on april 25! Hope this helps! And i hope my problem doesnt re-occur
its so annoyin!!!

See http://support.microsoft.com/kb/918165 "Problems in Windows
Explorer or the Windows shell after you install security update
MS06-015".

If you aren't comfortable with editing the Windows registry
yourself, then go to
http://www.kellys-korner-xp.com/xp_tweaks.htm and scroll
down to Item No. 383 "Hewlett-Packard's Share-to-Web software -
Fix". Download and run the script to automatically modify your
registry as described in KB918165. You may need to temporarily
disable your antivirus program in order to run the script.

A revised version of the MS06-015 update was released on April 25
that supposedly interacts better with the older HP and nVidia
software. You can download the revised update from
http://www.microsoft.com/technet/sec.../ms06-015.mspx .

Some people may suggest that you uninstall the MS06-015 update,
or rename the c:\windows\system32\verclsid.exe file. Doing
either of these things will leave your computer vulnerable to the
security issue described at
http://www.microsoft.com/technet/sec.../ms06-015.mspx .