SKYPE in Linux Redhat 9

Hi All,

I've 2 OS installed in my computer. one is Redhat linux 9 and the 2nd one is WIN - XP Professional. I can access the WINDOWS drive from LINUX by mounting the drives.
1. How can I access the LINUX folders from WINDOWS?

2. How to unmount the USB drive in LINUX?

3. How to install Google Talk and Skype in Red Hat Linux 9? I got the info that through GAIM, I can speak with others. I tried but in vain... Please guide me.

Thanks,
Srimaya