powersuplys are hit and miss the one you have may work just fine try it.
and if it dont work then get the biggest one you can.
what works and what is recomended are not always the same.
if you have a good 200wat your probly ok as long as you dont have a bunch of
drives and junk like that in your sys.
Is it just a different pin layout on the main ATX power connector? If so, it
may be quite economical to rearrange the pins on a standard power supply
using a cheap molex tool.
This link is probably the best (of quite a few) concerning the non-ATX
standard power supplies and mobo's used by Dell, and it also has the
wiring and pinout change diagrams.
