The Dink Network

Wizard help needed. I downloaded a program on a trial basis that was not suitable for me so I went to 'add/remove' and deleted it (could not find an uninstall). B.u..t upon turning the computer on this program is still there and automatically starts along with other startup programs. It flashes at me and the program starts. It then asks me to proceed. This program is not really there so how is it working and how do I get rid of it? I've tried right-clicking on it but there's nothing there except 'open' & 'close'. Also tried re-deleting but it's no longer listed. It is also starting to screw up other programs on the computer. Bummer! There need to be some laws against this kind of crap.
Thanks oh wise ones.