Right, but you can get the monitor now and keep playing.
Then order the Alienware PC sans monitor.
Also, here's a tip when re-installing DDO.
Install it from your original CDs/DVD-ROM, then instead of waiting for it to update, copy your current DDO folder to the same location as where it just installed.
(That folder is over 8GBs so you will probably have to setup both PCs on your network and create a share between them or go buy a 16GB Flash drive.)
FYI: I got faster loading just by getting a faster hard drive.