Did this ever get resolved?  My Dimension 8200 has never been able to run quicktime with any sort of regularity.  Right out of the box, it would either freeze, or play a few seconds of the file before freezing.  On my other dell which is running XP Pro instead of XP, Quicktime runs just fine.

I've uninstalled and reinstalled the files numerous times.

Quicktime has historically been a nasty little piece of code that causes a variety of ills.  While some may like it,  there is IMHO, no multimedia file I want to view bad enough to have it on my computer.  A forum (or Google, for that matter) search will be revealing as to the sheer quantity of issues QT provides for your amusement free of charge.

When I first got my computer and didnt know what I was doing I uninstalled quicktime and it took something with it because straight after that I lost all sound and I couldnt play videos I ended up having to re install XP.

I have since found a free download which lets you veiw quicktime stuff without having to install the whole kit. there is also one for Real.

Quicktime is updated every few years or so.

Best thing is to unistall it.

Also it does not like the 16 bit windows 3.1 versions to be installed after the 32 versions.

Try the stand alone installer do custom install and check everything except quicktime for java unless you have the sun java installed

http://www.apple.com/quicktime/download/standalone/