Hm, I dont think so. "Running as admin" forces the program to run with elevated rights (for programs which do not do that by default) which also means you will get the "do you permit this"-popup.SinbadEV wrote: "disable UAC for individual programs" is basically what "running as administrator" amounts to.
Tasclient.exe has the "run as admin"-flag hardcoded so it does not make a difference to check "run as administrator" for Tasclient. The only way to avoid the popup is to disable UAC globally (AFAIK).