Hi Ben
Sorry it's taken so long to get back to this issue - been busy earning a crust!
Environment: Windows 7 Ultimate 64bit, JRE, JDK 7 (build 1.7.0-b147), Dell M6600, 16Gb memory, Video Nvidia Quadro 3000M with 275.33 driver
I first uninstalled PGP 10.2 using standard uninstall routine and removed referenece to java.dll from PATH environment variable.
Reboot
Run PGPDesktopWin64-10.2.0.exe
The first thing of note is the opening install dialog - appears to be corrupt; suggest this could be some compatibility problem with video card - but I do not generally have problems with other programs. Click OK on this dialog and the install appears to run normally.
Restart windows when prompted.
I now get a repeat of the previous missing java.dll dialog.
Put back PATH environment variable referencing java.dll and reboot.
Everything appears normal PGP is working as expected.
HOWEVER, it is quite clear that the uninstall routine was not completely effective since I have not been asked for licence or location of keyring and all original PGP settings are as before uninstall.
In conclusion, it appears that neither the installer nor the uninstaller work correctly although the actual program appears OK if there is a reference to java.dll in the PATH.
David