Quartus 7.1 Sp1 and DSPBuilder 7.1Sp1

Firstly, I do have Apphelp.dll available in C:\WINDOWS\system32. When I ran DependencyWalker on PortManager.dll, this produced a single message: "Warning: At least one module has an unresolved import due to a missing export function in a delay-load dependent module." Evidently, this results from 'mpr.dll', which is buried 7 levels down in the call hierarchy. My problem, under WinXP, seems more basic. Yesterday I discovered that if I uninstall the Java runtime environment, Signal Compiler gives me exactly the same messages. It's as though the tool thinks that the JRE is missing altogether.