I would vote for Toshiba as well. The Satellite Pro series still has the serial port. You can also get the Wi-Fi built in so you can get on-line at many airport now. The only drawback is it's size and weight (almost 7lb) but like the gent said, "you can't have it all"
And dude, DON'T GET A DELL. I had bad luck with them and had to fight our IT department to get the Toshiba. The mouse button on DELL broke on my 2nd trip out to the field (they use a hard plastic hinge for the mouse button). The CD-ROM failed after a week. DELL do have good service but...
ALSO, Toshiba offer a type of "NO-Fault" warrenty that will replace your laptop up to once a year... even if you drop it off the 6th floor. I think it's around 500 buck US for 3 years.
Cheers,