Wooden Nickel and Alan Gordon both rent track. And it's pretty cheap.

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The aim of an argument or discussion should not be victory, but progress.
Joseph Joubert, essayist (1754-1824)

thanks a bunch!

I believe a cheap solution is maybe using a wheelchair. Not to sure, as I have never tried it, but I've seen it suggested by directors such as Robert Rodriguez.

kubrick used to use modified wheelchairs too...

www.maketradefair.com
www.thehungersite.com
www.oxfam.ca

If you want to build track, you might check out the site:

http://www.jorenclark.com/whitepapers/dolly.html

If you're going to build a full dolly, I?ve found that it's best if it's made with roller-blade wheels on a 3/4" metal pipe track. Roller-blade wheels are much smoother than the skateboard wheels used on the Clark version.

I have complete construction instructions in my book (Nuts and Bolts Filmmaking), but if you want to go to the table of contents, there?s a picture of it there (section 3.8):

http://www.cvisual.com/film-books/nuts-and-bolts-filmmaking-table-of-contents.asp

If you?re handy, you can most likely construct it from the picture alone (click on the picture to see it larger).

Also, when using a wheel chair, you?ll get much smoother footage if you hold the camera yourself rather than mounting it to anything touching the wheelchair. Hope this helps.

Dan Rahmel
Author: "Nuts and Bolts Filmmaking"
http://www.cvisual.com