Hi, I decide to try Red Hat Linux. I'm windows user since I've pressed

keyboard key for the first time in my life. I don't know much about linux.
I have the following configuration:

CPU AMD Duron 750 Mhz
MB: ASUS As7-vm
256 MB RAM
40 GB Hard Disk
modem Conexant
svga integrated chpset SiS 730

OS: Win XP

Now I decide to try Red Hat Linux 8. I have another disk 15 GB Maxtor and
want to use this disk to install linux to have dual boot. Win XP on one disk
40 GB and Linux on other disk 15 GB. I don't know how my hardware will react.
I don't have drivers for motherboard, graphics card, sound card, modem... etc
for linux, just for windows. My computer is pretty old and I'm not sure I'll
be able to find drivers for linux (or maybe I don't need them just like with win XP).
However, I don't have any experience with linux and don't know from where to
start preparing for linux OS. How to test if my hardware is compatibile with
linux and for example will my modem work. How to set up dual boot. I think it
would be wise to remove my hard disk with windows (40 GB) when making new
file system for linux, and then I return it back after linux is installed.
If you had similar experiences and dillemas,or know good links for linux
newbies it would be nice to share them with me.
All advices are more then wellcome!

Thank you!