Update MSI Installer for Vista

I have a software program that uses a MSI installer that works fine on XP but when installing on Vista with UAC it can cause errors with the installation. The installer will install the program fine but some of the dlls and ocx will not be registered correctly. To fix the problem the user must use regsvr32 /u (dll name) and then do regsvr32 dll name. After completing these two steps it works fine. I need someone to fix the MSI installer so the ocx and dlls are installed correctly the first time. The program can be downloaded form: [login to view URL]