Patches probably won't do much.
Give of some more information about your clipper application. Such as what linker are you using, what linker switches are used, what kind of operation is being performed when you switch focus back to your XP application...
There are several strategies you could employ to make your clipper app more compatible.
Lyndon
---People Remember about 10% of what you say ---They never forget how you made them feel. Covey