Try these services:

http://www.alacart.com/cgi-bin/index.pl

http://www.takeouttaxi.com/States/DC.html

I've also eaten at the Smith & Wollensky in D.C., excellent food. Doubt they deliver, but the manager might work with you when he hears the story:

http://www.smithandwollensky.com/LOC-WashingtonDC-Hours.asp

__________________
81 300SD
08 MDX Tech
93 525i

05 F650GS