hotfix for my user32.dll file?

I use the Avant Browser, and sometimes it runs the CPU up, epecially on certian websites.

I found this solution on Avants website:
http://forum.avantbrowser.com/viewtopic.php?t=14642

which led me to an article on microsoft's website:
http://support.microsoft.com/?kbid=890582

I emailed thier customer support hoping they could give me the hotfix, because it could be a really long time before they come up with a new service pack. It's been over 24 hours, since I emailed them. I have not got a response.

I basically need to update the user32.dll file version, at least according to the thread on the Avant website. I check the versions of both user32.dll and win32k.sys, and only the user32 is of the lower version.

Does anybody know where to find this hotfix? Or should I call Microsoft? They normally charge for this kind of support, but the article says it may be waved.

 

I recieved an email from Microsoft today, they needed more info., such as what OS, I was using.