Personally I suggest the following:
Monitor: Sony 19" or 21" FD Trinitron series, I have never seen a better or flatter screen on anything. The lines are a bummer, but don't really bother me.
Vid Card: GeForce2 GTS Pro or Ultra
CD-ROM: Pioneer DVD 115
Case: Lian-Li brushed aluminum case. - Pretty awesome, 3 fans all silver, but will cost you $200
RAM: Going with a 1.2ghz AMD processor, you should really get PC2100 or PC1600 RAM, otherwise the PC133 or PC100 RAM just makes a big bottle neck and you might as well just have an 800mhz CPU.
Fan: I had a chrome orb fan, they look cool but are pretty much junk, just go with a standard AMD fan/heatsink like that one that comes with a boxed retail CPU.
Also, you won't need a bigger power supply if you are getting a bigger monitor like whoever said, the power supply has nothing to do with the monitor.