Try a build-your-own. 1 Grand will get you an entry level Core 2 Duo build, using an asus p5b vanilla and 2 gigs of ram. Throw in a 7900GS is you can afford it, otherwise the recomended 7600GT. Below is one of the builds i planned, though never executed. It is all compatible, though you can up the proc to a E6600 if it pleases ya, and add hard disk space.
(I am basicly giving a parts list of what the guy above me said)
I am assuming you are in canada, which newegg does not ship to. Overclockers.co.uk will ship there, and those prices are somewhat similar.
Intel Core 2 Duo E4300 Allendale 1.8GHz 2M shared L2 Cache LGA 775 Processor - Retail $119.00 $119.00
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115013 ASUS P5B LGA 775 Intel P965 Express ATX Intel Motherboard - Retail $119.99 $119.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131030 Kingston 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 667 (PC2 5300) Dual Channel Kit Desktop Memory - Retail $89.99 $89.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16820134046 Western Digital Caviar SE WD1600JS 160GB SATA 3.0Gb/s Hard Drive $52.99 $52.99
http://www.newegg.com/Product/Product.asp?Item=N82E16822144415 LITE-ON Black 18X DVD+R 8X DVD+RW 8X DVD+R DL 18X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM IDE DVD Burner - Retail $29.99 $29.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16827106043 NEC Black 1.44MB 3.5" Internal Floppy Drive Model FD1231H-302 - OEM $6.99 $6.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16821152005 EVGA 256-P2-N541-T2 GeForce 7600GS 256MB 128-bit GDDR2 PCI Express x16 Video Card - Retail $69.99 $69.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130075 XCLIO GOODPOWER 500W ATX12V 500W Power Supply 115/230 V UL, CUL, TUV, CB, VDE, FIMKO, DEMKO, NEMKO, SEMKO - Retail $49.99 $49.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16817189005 Microsoft Windows XP Home Sp2b 1pk - OEM $89.99 $89.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116056 COOLER MASTER Centurion 5 CAC-T05-UW Black Aluminum Bezel, SECC ATX Mid Tower Computer Case - Retail $49.99 $49.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147037 $678.91 $678.91
Stay with XP ftm, Vista is still to unstable w/o SP1.
This is just a guideline. Feel free to use it, upgrade it (especially the vid card), or pitch it all together.