So how well will this work

[todpod]

I just got an old emachine 333c, a cyrix 333mhz. Its a matx case with 120w ps. I am thinking of pulling the mb and replacing it with either a via 1ghz itx, or a matx socket a board. So my big ? is will the 120w ps be enough for the itx board. I am assuming I will have to replace the ps with the Duron/Athlon. The computer with have a DVD and HD and thats about it. It would be connected to the TV for DVD and more likely Divx. It kinda seems silly to replace a perfectly good case. Thanks todd