Im off to a trackday tomorrow

[fluke]

In between me riding around and not trying to fall off, I'd like to have a go at some riding pics with my 350d

The problem is, the only lenses I have are the one that came with it (18-55) or one from my old 300v which is a 28-105usm

What would you say is the furthest away I could get some reasonable pics from?

I will no doubt be trying every setting under the sun, so any last minute tips would be great!:)

[PhotosGuy]

I will no doubt be trying every setting under the sun, Start with this:
Virtual Camera:
http://www.camerasinteractive.com/index.php#
And this:
Underestanding Exposure: Sunny 16, meters, black subject vs white...
http://www.luminous-landscape.com/tutorials/understanding-series/understandexposure.shtml

Read these when you have time:
Enjoy! Digital SLR Cameras - a Canon beginners guide.
http://web.canon.jp/Imaging/enjoydslr/index.html
Exposure explained: Three gateways for light.
http://www.canon.co.jp/Imaging/enjoydslr/p_2_005.html

Exposure = Aperture + Shutter Speed.
http://www.mir.com.my/rb/photography/fototech/apershutter/
Exposure - Low Tech Tips
http://www.photonhead.com/exposure/
DOF explained
http://www.cambridgeincolour.com/tutorials/depth-of-field.htm
SimCam
http://www.photonhead.com/exposure/simcam.php