Building new system

Something that may help you is to list out all of your requirements (something we should have suggested earlier on), along with "nice to haves" and your budget constraints. That will help determine the specs of the computer you need and/or could get.

Hi,
I see you've had a little more input since I've been away- bit problematic keeping up with the thread being 18 hours out of sync with Canada.

I tossed in the blu ray (and the speakers) solely because you mentioned that you weren't a gamer and wanted to watch video on your computer- that usually implies that the computers use would lean toward multimedia. A regular DVD optical drive would suffice along with standard satellite speakers.
Bear in mind that I picked componentry mainly from one vendor (newegg) for simplicity in ordering and combined shipping. I personally would buy from any source that offered the best price (including shipping option) regardless of how many different orders I placed.
For instance, in Canada -with a little help from Google.....
CPU : Core i5 750 Retail (Free shipping, $215)
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=4959973&Sku=I69-0750
Motherboard: Gigabyte P55-UD3L ($130 + shipping)
http://ncix.com/products/index.php?sku=47336&vpn=GA-P55-UD3L&manufacture=Gigabyte
RAM : G.Skill 4Gb DDR3-1600 Ripjaw CL9 ($99)
http://www.newegg.ca/Product/Product.aspx?Item=N82E16820231277
Graphics card: Powercolor HD5750 1Gb ($126.88 + $9.99 shipping)
Power Supply: Corsair TX650w ($89)
http://www.directcanada.com/products/?sku=11180AC2550&vpn=CMPSU-650TX&manufacture=CORSAIR
Hard Drive: Seagate Barracuda 7200.12 500Gb ($52.55 + $9.99 shipping)
http://www.directcanada.com/products/?sku=14120DR8025&vpn=ST3500418AS&manufacture=SEAGATE
Chassis: Thermaltake V3 Black Edition ($49.99 + shipping)
http://ncix.com/products/index.php?sku=46894&vpn=VL80001W2Z&manufacture=Thermaltake
OS : Windows 7 Home Edition x64 OEM
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=5213932&CatId=4622
Optical Drive: Sony Optiarc AD-7024S-0B SATA CD/DVD ($32.49+shipping)
http://www.newegg.ca/Product/Product.aspx?Item=N82E16827118030
Mouse: Microsoft Silver Comfort optical mouse 3000 ($27)
http://www.newegg.ca/Product/Product.aspx?Item=N82E16826105286CVF

Total cost : $842 +shipping on 5 components

Dependant upon where you live you may also have access to retail.
You should also be able to access etailers that don't come up in the first few hits on Google. You will also have access to specials and stock that is eligable for rebates-whether you actually get the rebate is another matter entirely.
If you have no interest in gaming at all, then purchasing a last generation graphics card such as http://www.newegg.ca/Product/Product.aspx?Item=N82E16814102854 is an option which would save you $60-70.

Great info thanks I know a guy (not well) who builds computers and have now ask him with the help of your suggestions. I am waiting to see what he says for cost before I make up my mind.

Best wishes, you really can't go wrong with any of the recommendations we have given. You don't have super hi requirements (which is good), and means that any decent new system will last you a while and perform well for you. My last recommendation again is to read the http://www.techspot.com/guides/buying/ . If you have money left over consider a small (60-80Gb) SSD drive as your boot device - this is probably the single biggest thing you can do at this point to improve system responsiveness and program loading speed.

What will this do for me and how does it work sorry for the lack of knowledge but I guess I am behind the times further than I thought.

read up on http://en.wikipedia.org/wiki/Solid-state_drive
and in the pc buying guide and in the SSD drive round up review:
http://www.techspot.com/review/181-solid-state-drive-roundup2/

I asked him to go in for a cheaper build so that he could invest in better HT accessories or may be get a better set of speakers. Else, the i5 is great.