PdxRegCl.EXE

I have used posts to this board in the past to resolve this issue, but recently installed WPOX5 on Windows7 machine and tricks that worked in the past on Windows XP do not appear to work in Windows7. I have cleared all of the registry entries of PdxRegCl and have disabled the Registry Cleaner in the start up of msConfig, but next time I start Paradox, Windows recongifures it and all of the registry entires reappear and the RegistryCleaner is back in the startUp. I cannot retain the working directory that was set in the last session and all of the established ALIASES are lost. Any assistance would be appreciated.