YO WASUP, i also live in toronto. im glad someone here is from it, and so is Chankama i think, anywayz the point is. u can get a GREAT computer with $1000 to $1300.
http://www.torontopcstores.com/index.php?board=1;action=display;threadid=538
thats the link to the 25 stores in the 2 blocks of Spadina and College, lol, all crambed together. anywayz. here is a list of what you want.
first of all, u dont want intel unless of course if ur waiting like 3 weeks for the new Intel Core 2 Duo to hit toronto. if ur buying now, then you want AMD. u dont really need Am2 because the only difference is the new platform of ram, DDR2, which isnt better than DDR its just different. anywayz. here is ur list
http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=006688&cid=MB.693
http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=009419&cid=CPU.611
http://www.filtechcomputer.com/product/ProdList.asp?nCatID=1004
go there, press Ctrl+F, and type in 'OCZ5002048 ELGEGXT' without quotes.
http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=007311&cid=HD.96
http://www.filtechcomputer.com/product/SearchList.asp
http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=007056&cid=PS.808
that adds up to about $997
but this exludes case and tv tuner. as for those, pick basically any tv tuner by Hauppauge that will fit ur needs, or leadtek. they make good tv tuner cards, but they serve different purposes, there are some for tvs, and hookin up ur xbox or something to it, its up to you, just post here, and we'll tell you. and as for case, just pick one that looks good, and has decent cooling, like it comes with 2 fans or 3 or something. thermaltake ones are ones that come with fans and are good cases. so u have $300 for everything. left correct, so approx $100 goes to case, and $100 goes to Tv tuner, u have $100 left, and this is the keyboard/mouse for you.
http://www.filtechcomputer.com/product/ProdDetail.asp?nProductID=8516
http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=007679&cid=PE.703
and u still have about $35 to spare.
P.S. those stores, if you ever need anything technology related just keep those in mind, memorize those stores, live it, breath it, love it. lol

and good luck. if u have any questions jsut ask.