Whats wrong here!? Forums are practically dead and per user support is only for PRO users. I can't even install the damn thing!?!?!?!? And im not the only one?!

Why don't you use InnoSetup or NSIS installer and not this InstallShield crap that works only when it desires to work? InstallShield is too dependent of other system components if you dont use it right. Those two installers are very powerful and they work perfectly anywhere. Customization is on very high level too. And since LimeWire is free (at least basic version),i dont see any problem why dont you use it.