Quote -
 I will think of a way to vote for a winner by the end of the month using a forum Poll.

I don't know what the vote pages look like as i've never voted on a contest yet but perhaps asking one of the coders for renderosity.com to create us a custom page with the vote options below each picture once you click on the image you want to view?

Dell XPS M1730
Intel Core 2 Duo T9500 2.6Ghz
500GB (2x 250GB) RAID 1 Sata HDD
4GB RAM
Nvidia GeForce 9800M GTX SLI