Sharing a fileview with other callers during a conference?

I would like to take my callers through a website, so I will be going through the different links, showing them what's good/bad, etc during this call. I don't think this can be done, or am I missing something?

(I've tried oovoo, and it works for this - but it's a 30 day trial only and it screws up my webcam when I switch between applications)

Thanks in advance for any ideas!