do you use Quality Center (QC)?
if so, "QTP is not compatible with revision control systems" is not true.....
1. on the QC server side install "Source Safe" by Microsoft or "Clear Case" by Rational;
2. on the QC server side install Version Control plugin (you will need to make it enabled - don't ask me how - i don't know [img]images/icons/smile.gif[/img] ;
3. connect for QTP to a project of the QC server -> there is "Version Control" item in the "File" main menu; "Check In" & "Check Out" operations are available.... any test version is available