What size power supply to get?

[SLPFirehawk]

Here are the specs of my computer:
Asus CUSL2-C
P3-866
512 MB RAM
30GB IBM 75GXP
60GB Maxtor (5400rpm)
Plextor 8x4x32x
Pioneer 16x DVD-ROM
Radeon AIW
Philips Acoustic Edge
2 Sunon case fans
Several USB Devices

Would a 300w PS be enough or should I get a larger one? I'm also considering using this case for a Pentium 4 upgrade later down the road.

Any suggestions on brand and wattage? Thanks!
Hawk

 

[GregMal]

Why limit yourself.......look for Athlon/P4 approved 350w+ power supplies.........
Appears to be some good deals at www.800pc.com.............
Greg

 

[hifimaster]

350-400 watt I am not sure a 300 will do,better safe than sorry

 

[trez2k3]

I am sure a 300w will be fine just make sure its good quality like antec enermax or sparkle.