You have UAC turned completely OFF and you still have this problem? Hmm. The program is possibly only configured for higher privlages, and so it must require an administrator account. I don't think there is any other way...
unless you want to try this: you can right click on the program (while on the administrator account), select properties again, then go into security tab, click "Edit...", click "Add...", then type your standard user account name exactly (You will have to let me know if this step works). Once it is added into the Group or user names: section, click on it (The limited account user name), and at the bottom with all those check boxes, click full control, then hit ok.
However, I am not sure this will solve your problem with it not starting up with the computer. It should only be configurable to do that in the program itself and I doubt windows can do anything about it.