thoughts on this rookies first build

[mcucs]

ill admit, not only am i a rookie, but im also somewhat computer illeterate... but everyone must start somewhere.....right?? with that said im looking to build a fast computer,that will also double as a media center and support the existing 2 hdtvs i have,with expandability for the future.
case and power supply: antec titan 650.....http://www.amazon.com/Antec-Titan-650-ExtendedATX-Server/dp/B000QSX9LS/ref=sr_1_1?ie=UTF8&s=electr
motherboard: gigabyte ga-ep45-ud3p.....http://www.gigabyte.us/Products/Motherboard/Products_Spec.aspx?ProductID=3139
processor: intel core 2 quad.....http://ark.intel.com/product.aspx?id=33924&processor=Q9550&spec-codes=SLAWQ,SLB8V
ram: crucial 1gb,ballistix 240 pin dimm ddr2 pc28500(4gb total)..... http://www.crucial.com/store/affiliateredirect.asp?IMODULE=BL12864AA106A&AID=5032657&PID=862686
hard drive:western didigital caviar black 1tb.....http://www.newegg.com/Product/Product.aspx?Item=N82E16822136284&nm_mc=AFC-C8Junction&cm_mmc
vidio card: sapphire vapor-x radeon hd 5770.....http://www.newegg.com/Product/Product.aspx?Item=N82E16814102868&nm_mc=OTC-Froogle&cm_mmc=O
tv tunner card:hauppauge wintv-hvr-2250.....http://www.newegg.com/Product/Product.aspx?Item=N82E16815116036&cm_re=hauppauge_wintv-hvr-225
optical drive: sony optiarc black 24xsata dvdrw/cdrw(x2).....http://www.newegg.com/Product/Product.aspx?Item=N82E16827118030&nm_mc=AFC-C8Junction&cm_mmc
operating system windows 7 (probably at 32 bit).....http://www.amazon.com/Microsoft-Windows-7-Home-Premium/dp/B002DHGMK0/ref=sr_1_2?ie=UTF8&s=soft

as i said...im looking for expandability in the future.. so being my first build i chose to err on the bigger side....however if some of these components seem overkill please let me know your feelings.....or if they seem inadequate for the build let me know also..
thanks for any and all help as this system will run me about 1500 and iam trying not to inccur any extra costs

[RickyTick]

There's really not a good reason to use a P45 motherboard and a LGA775 cpu on a brand new build. Look for a P55 motherboard and a i7 cpu.
1gb of ram is not enough. 4gb is the new minimum for a new system, plus ram prices are still fairly inexpensive these days.
Otherwise, looks ok.

Look in this thread at the "Step Above" set-up. That's a great place to start.
http://forums.mysuperpc.com/showthread.php?t=1642

[mcucs]

was looking to keep price low on build and thought i wouldnt be able to afford this newer technology. however with a bit of good advice and a little more research i found this deal at newegghttp://www.newegg.com/product/combobundledetails.aspx?itemlist=combo.328905. only $74.06 above original build.

case: ABS Canyon595 black aluminum super full tower http://www.abs.com/app/canyon595_details.asp
power supply: rosewill green series 700 watt http://www.rosewill.com/products/1375/productdetail.htm
motherboard: gigabyte ga-x58a-ud3r LGA1366 Intel x58 http://www.gigabyte.us/products/motherboard/products_overview.aspx?productid=3317
processor: intel core i7-920 bloomfield 2.66 GHz LGA1366 http://intel.com/consumer/products/processors/corei7-specs.htm
RAM: Kingston Hyperx ddr3 triple channel http://www.valueram.com/datasheets/khx1800c9d3t1k3_3gx.pdf
hard drive: Seagate Barracuda 1.5 TB http://www.newegg.com/product/product.aspx?item=n82e16822148412
vidio card: sapphire vapor-x radeon hd 5770.. same as original build
tv tuner card: hauppauge win tv hvr-2250.. same as original build
optical drive: sony optiarc black.. same as original build
os: windows 7 home premium.. same as orininal build, but at 64 bit.

1 final question... to add more ram, i assume i will need to stay with a triple channel kit like the one supplied in the bundle... but will be able to add any size (gb) kit i choose.