Help with new eSATA Enclosure installation

I'm having a problem with my new eSATA enclosure not being recognized,
and certainly appreciate any assistance you can offer.

My System
~~~~~~~~~~~
Albatron Mars PX915P/G MOBO
Intel P4 3GhZ w/ HT
2 PATA HDD's (250GB, 40GB)
1 External USB2.0 HDD (XIMeta NetDisk)
Win XP Pro, SP2

New Additions:
~~~~~~~~~~~~
Thermaltake A2319 MUSE eSATA 3.5" HD Aluminum Enclosure
Seagate Barracuda SATAII 320GB 7200.10 w/16MB NCQ ST3320620AS

Since installing this
~~~~~~~~~~~~~~~~~~
my 3 existing HDD's are still recognized and functional
2 "!"s show up in Device Manager under IDE ATA/ATAPI controllers
both of which are listed as being "IDE Channel"
when I try to install them it tells me that they were not intended for
this platform

Other considerations:
~~~~~~~~~~~~~~~~~~~
When I install windows, I have to install the ITE IT8212 ATA RAID
Controller
(or it seems my Hard Drives do not even get recognized whatsoever)
I did not connect the HDD LED connector for this enclosure to either
the MOBO or the chassis (figured it's not necessary, and AFAIK my MOBO
only has one HDD LED connector that's already being used)

Thanks again for your help in advance

 

Update
~~~~~~~~~~

After restarting my PC 2 more times,
those "!"s from Device manager are gone

Now I have a new entry under disk drives = ST3320620AS
This my hard drive as per the seagate website
however, the drive is not to be found in "My Computer"

also,
I went into my BIOS
and made sure I adjusted the setting to allow both PATA and SATA
it was previously set to auto, but I changed it to enhanced mode which
allows up to 6 drives between the two medium...
just to make sure

 

Running XP? Right-click on My Computer, select "Manage", then Disk
Management. Find the new drive in the list? Right-click on it, and set it
up.