Is this power supply good enough to add another HDD

[Vippo]

I bought an already build PC with this power supply:

CPB09-001A Chicony 350W 24 Pin ATX Power Supply - P/N D350P002L

Which is giving power to this PC:

Intel Core i7-860 Processor
Dell Studio XPS 8100 Motherboard
4 x Samsung M378B5673EH1-CH9 2GB RAM
ATI Radeon HD 5770 1GB GDDR5 GPU
SAMSUNG HD103SJ 1TB HDD
LG DVD Drive HL-DT-ST DVD+-RW GH50N

Now that my guarantee is over I would like to put in my old HDD from my older PC into this one. My question is will I need a different power supply (if yes could you please suggest which one) or if this one is good enough to keep the PC stable.

The HDD that I want to add:

WD Caviar Blue WD3200JS 320 GB

Thanks a lot for your help.

 

[Rugger]

A HDD will draw a max of 25W. Your system isn't likely to draw more than 250W at full load...your system should be able to easily handle the extra load from the HDD.