incoming mail failing with outlook express 6.0

hello everyone,
I have come across something that I have never seen before nor can I find any info on it. First the system specs are as follows:
PIII 800 mhz, 256+ MEM, Windows 98, outlook express 6.0 (with all security updates) ie 6.0 (same as oe).
Ok here goes the best explaination of what is happening: under the main identity there are two email addresses setup one works flawlessly both incoming and outgoing, the second one sends fine but will not receive anything times out with error code ox800ccc0f. I can set this account up on another computer with the same exact settings and it works fine/flawlessly.

Things recently done to pc: AVG detected the presence of a Trojan virus which I used housecall on trendmicro's site to remove, ran Ad-aware and removed some spyware files. All worked fine prior to removing the trojan which was in the c:\windows\temp directory. This is really all the information that I have.

Things done to try and fix it so far:
1. created new identity under different mailbox.
2. renamed inbox, outbox several other dbx files.
3. completely uninstalled (using add/remove programs and deleting registery values and program files not the folders themselves)and reinstalled OE 6.0
4. tried running scanreg /fix (failed about halfway through due to corrupt files)
5. checked for spyware and viruses again.
Note none of these thing seem to correct the problem and really this is more for my own knowledge now as the person who is experiencing this problem will be upgrading to a win xp based system the first of the year.

Well I certainly hope someone can help me solve this one as it has be baffled.

Thanks in advance,
Mike