Go to Home Depot, get some Simpson Strong Tie RTC24s with matching screws, some 2x4s, and have them cut a sheet of 3/4" plywood whatever size you want. Build your own desk, any size, any height, any width you want. It ain't pretty, but it won't collapse.
I have two PCs, one notebook, four monitors (two of them big CRTs), a TV, a DVD recorder, an ink jet printer, and a bunch of other crap on mine.
http://www.strongtie.com/products/connectors/RTC.html