I dont use PC-Cillin, and never have so im not going to make out that i know the first thing about it. It does appear a little strange that it is not doing anything with this.
Im just throwing something out on a string here until someone who does use the software may give more advice to your problem. But if you have not done so already, please update and scan with ewido Anti-Spyware
and delete anything it finds, then try running another scan with PC-Cillin and see what it brings up,if anything.
Ewido has a fantastic detection rate for all Spyware and trojans.
If you dont already have ewido installed on your PC you can download it from HERE
It is a 30 day trial of the full version, but its still remains working after that period so do not delete it. The only difference is you will not longer get the real time protection it has, and it wont automatically update itself. However, you can still update it yourself though everytime you scan with it, it will become a vital part of your Malware prevention!