WTB: Thinkpad between range 450~550 Canadian dollar

[sco1984]

Hi,
I want to buy ThinkPad between range 450~550 Canadian $ .
Expected conf :

Centrino 1.8 onwards
256~512 MB DDR ram
40~60 GB hdd
100 mbps ethernet
Combo or DVD writer
Screen ( doesnt matter 14.1/15"4 whatever)
Touchpad ( My R50e dont have touchpad )
802.11 g
Battery ( would be good if it runs on battery for 1 hour atleast )


Regards,
Amey.