I want to bay a digital camera to fix it on the microscope, connect it to my labtop to watch a life picture?

I want to use the digital camera on the microscope and the field
connection through USB to capture life image on computer.
8-10 mega pexil.

Links below. Have fun, er, well, hope it works out.

You're probably going to have to go looking for DSLR cameras. They'll have the SLR interface to afix them to microscopes, but you'll need to find the right collars to mate them up properly. The scope manufacturers should have lists of accesories available.