Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Very nice build, if you want to save some money I'd even go with the 550 watt Corsair
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004
It's going to be 300 times better than your P4.
Best upgrade I ever had was from a geforce 2 series ( I think, very crappy card) , to a 9800 pro. I remember playing FFXI at like 640x480 on the geforce with super low settings, and it was like a slide show. The day I popped that 9800 pro in, I was a very happy little boy.
HP has also made a utility to make a USB drive bootable
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?swItem=MTX-UNITY-I23839