Switching from RH 7.3 to Debian 3.0r1

[Curtis <Naota@tampabay.rr.com>]

I've downloaded the debian isos, burning them afterwards, but before I 
take the plunge into switching, is there anything to prepare? 
This is my first time switching distros on a computer.  Any pitfalls to 
avoid. 
By the way, I wanted to do a netinstall, so I only have to use the first 
cd. 

-Naota.