Hi Melissa, you need to run that Eset Scanner again and this time allow it to fix everything it finds.

Your HJT log shows that you DO NOT have an anti-virus program OR firewall installed and running on your computer.

These two are absolute musts, as you now see, 240 Win32/VB.D worms (ALL from .zip files) in your Eset log and one Win32/Agent Trojan which is a Trojan that downloads and installs other malware on the infected system.. For your information...Win32/VB.D worms are usually transmitted via P2P file sharing in zip files. Very dangerous business really, something we do not recommend or condone here, but of course that is users choice to take a giant risk I suppose.

I liken P2P file sharing to this...if somebody delivered a box to your house, you have no clue who the sender is because he doesn't use his own name, he makes one up and you don't have a clue as to where he is or how clean he is, BUT you open it anyway. Inside the box is a sandwich, with several bites taken out of it...would you eat it? I doubt it. But daily people share programs and files with unknown people from anywhere in the world because they can get costly programs for free. Well the old saying, "you get what you pay for" certainly holds true here.

Now 238 of these infected zip files are located in C:\Documents and Settings\XPUser\Complete\
So I don't know if you downloaded these files via the web or if they came onto the system via a flash drive or something similar. But they are all infected, each and every one of them. The other three are located in C:\Program Files\winupdates\a.tmp and C:\Program Files\winupdates\a.zip then the Trojan is located in C:\WINDOWS\browser.exe

MBAM found and deleted 6 instances of MyWebSearch which is malware and also removed a Rogue Antivirus program.

Now you uninstall list shows several programs, Radialpoint Security Services (I have no idea what this is though evidently it comes from Verizon), also showing is Authentium AntiVirus SDK - 2, so there are two security programs not being used. If there is a reason you have them but are not using them can you tell us why? If you don't want to use them then uninstall them and pick one from the link I will give below. There are three on that link which are excellent. Choose one and install it.
Other entries from your uninstall list which also must be uninstalled are the three noted below.
PPSDKRedistributables, Viewpoint Media Player, Viewpoint Toolbar

Please run the Eset Scanner again and allow it to fix whatever it finds. Save the log and post back here with it.

You need to get an onboard anti-virus program and firewall ASAP. XP has a built in Firewall...it's free, it is all ready on the computer. There are other Free ones to use and readily available if you don't want to use the built in one. Go here
and pick one of the FREE anti-virus progams and download, install and update and USE it...do a full system scan and have it fix/remove/quarantine all it finds. There are also FREE firewalls linked there if you don't want to use the built in firewall.
Run the Eset scanner again, run the new antivirus program you download and then run a new scan with HiJackThis. Post the new logs here.