My Gaming PC Build - Anything Missing/Suggestions?

I'm trying to keep this under $1000.

http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
(HD 4890 and Vista 64bit Home Premium) $324.98

http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
(AMD Phenom X4 955 3.2GHz and ASUS M4A79T Motherboard) $319.99

http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
(750W Power Supply and Antec Case) $209.94

And I already have - http://www.newegg.com/Product/Product.aspx?Item=N82E168... (4MB RAM) - so it's not changing, although I could add more memory if necessary.

I also have a 1440x900 HD monitor that I'm not changing now, but I probably will within the next 6 months.

I've changed this list many, many times over the last few days, and I mostly need to know if I'm fogetting anything I need, but suggestions on parts or better deals are appriciated.