[Mr Rat]

-Behind a router or direct connect to your ISP?
-Wireless router?
-No encryption?
-Old encryption (easy to sniff)?
-Use MAC address filtering?
-Remote Access turned off on your computer?
-File sharing turned off?
-Firewall installed on comuter with proper settings?
-Virus/spyware detection on your computer?
-Other people use your computer?
-Password on your computer?
-Old cordless phone (easy to listen in on)?
-Check to see installed programs that match an install date as the date the USB drive was 'tested'?
-Other issues could be a hack into epass or email of course (I would assume e-mail before epass but you never know)
-Have epass trace the IP to a general location (to see if it is someone with an ip in the same area as you - may help a little to determine what was really penetrated)?

Just tossing out some ideas...if you are not on a secure network, any passwords you change may still be viewed.

What I would do:
-Wipe drive and do clean install of computer - (use Ghost or the like after you have it done so if you have to clean install again it is not so bad with drivers, programs, etc...)
-If you don't do a clean install, I would run two different programs for virus and spyware scans...still does not mean you are not infected...with finances in jeop, I would do clean install (after fromatting or wiping the drive)
-Secure your network...if using a wirelss router and have not changed the password or encryption on it, I would direct connect to it via cable and change it...use any filtering on it that you can also...wired routers are also vulnerable
-Once you know you are secure and know computer is clean, chane all passwords (to e-mail, epass, all finance accts, computer password, etc...)

Just stuff off the top of my head...I am sure stuff was missed though (I am not a hacker btw)...good luck and push epassport to get an ip trace done ASAP - as well as trace to who the funds were sent to (though the culprit may have access to several hacked epassports and the first transfer may be bs).

Good luck.