Can i use my digital camera as a web cam ? if yes how? pls. help.......?

depends on the brand. some cameras can and some can't. Even if it is the same brand that one that can. Read your boxed manual or see your instalation disc for anything like this.

That's a good question. I have been trying to figure that out myself...

http://www.download.com/
go here and get faststone.orgs free download it has that program built in it, and its a great program!

not possible