Use the infos you found with the help of google: http://www.pestpatrol.com/PestInfo/i/igetnet_v5.asp
or
Use Adaware(www.lavasoftusa.com) or SpybotSD(security.kolla.de)

or kill the Winstart001.exe Task with the Taskmanager and let Avast clean it
or
Start the PC in safe mode and let Avast clean them.

I would prefer the Adaware/Spybot solution.