Actually I'm pleased you can't run Regcure as it is a scam program and will mess up the registry of your pc. (do a google search and you will see all the complaints) My advice is to get rid of it and any other Pareto Logic programs and attempt to get your money back (don't rate your chances though).
Can you tell us more about the problems you have with your pc that made you try to fix it? also if it is XP or Vista or W7. The more detail the better.
You could try doing a system restore back to a date before you had problems.