i've used Reiser, XFS and EXT3. they are all very similar in functionality, but their performance can differ.
really, they all have their plus and minuses.

if you need to ask the question...

NMSportster, i think that many of us will need to get a better idea what you are trying to do before we can help.
if you want all the different domains to go to the same IP address, then simply put...

in order to see your windows partitions under linux, you will have to mount these partitions.
best thing to do is put the location of your windows partition into your /etc/fstab file.

first,...

open up a terminal and do this:
tail -f /var/log/maillog

now, try to send mail to the machine from an outside source. do you see anything appearing in your mail log? if so, then it should...

how about forcing mysql-server back onto your system to clear up any missing files ,etc?
rpm -Uvh mysql-server --force