Browser Hijack?

Hello all,

I've searched through the forums and cannot find the same problem posted, but apologies if this turns out to be a new post on an old issue..
OS XP Home SP3
Zone Alarm free
Ad-Aware Plus
Avast anti virus (free version)
IE6 and IE7

Problem:
I always set my homepage to About:blank, helps detect browser hijacks as about:blank is a local file and does not require internet access.
3 days ago Ad-Aware told me that I had a trojan in Wininet.dll, and promptly quarantined the file. Explorer.exe uses this file, so all I could get was my background screen and no programme access, not even in safe mode.
Re-installed XP and all service packs.
When I open IE6 or IE7, Zone Alarm tells me IE is asking for internet access through the loop-back adaptor 127.0.0.1 port 5152.
This has not happened for the previous 3 years on XP, and I believe that 5152 is a UDP port ie no handshake protocols
Is this a Trojan??, Google Chrome opens to the blank page without asking for access to the internet.

thanks for your help

Dave

 

Thanks Evan, will do.

Dave