Quite alot there..
Heres what im pretty sure are viruses
O4 - HKLM\..\Run: [Avg Antivirus] C:\WINDOWS\system32\icpldrvx.exe
O3 - Toolbar: Protection Bar - {84938242-5C5B-4A55-B6B9-A1507543B418} - C:\Programmi\Video ActiveX Object\iesplugin.dll
O2 - BHO: (no name) - {67982BB7-0F95-44C5-92DC-E3AF3DC19D6D} - C:\Programmi\Video ActiveX Object\isadd.dll
C:\WINDOWS\system32\icpldrvx.exe
C:\Programmi\Video ActiveX Object\isamini.exe
I notice you haven't renamed hijackthis.exe..
Read up on the link howard gave you