New XPSP2 system, and hundreds of event ID errors!

Hello all.
Here we go again. This time with this brand new machine. I just don't get it! maybe someone out there has some magic they can weave upon me, as I am just about ready to give it up!

I just had a new system build for me last week, and in that 1 week, I have had 2 BSOD with errors:
IRQ_NOT_LESS_OR_EQUAL in the section 0X0000000A .
I had NO really big problems, so I have been loading this new machine up with all of my stuff.
I rebooted, as I had added software, and found myself doing a chdisk. This was my 1st HUGE error.
Event Type: Error
Event Source: Ntfs
Event Category: Disk
Event ID: 55
Date: 11/21/2006
Time: 1:35:23 PM
User: N/A
Computer: THEBEAST
Description:
The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume C:
I let that run overnight. I had been awakened at 3am
I checked on the scan progress. It was at 67% last step. I went back to sleep. Woke up, checked on the machine, and the scan was stuck at that 67%, so I rebooted into safemode. The machine would NOT load into safemode, so I was able to do a rollback and my new machine seemed perfect once again. No errors...
until today .. today the "S" is hitting the fan!
I have OVER 100 assorted "ESENT" errors, I will list the EVENT ID/s and associations:
Event ID: 485
Event Category: General
Description: svchost (1304) An attempt to delete the file "C:\WINDOWS\system32\CatRoot2\tmp.edb" failed with system error 1392 (0x00000570):
"The file or directory is corrupted and unreadable. ". The delete file operation will fail with error -1022 (0xfffffc02).
Event ID: 439
Event Category: Logging/Recovery
Description: Catalog Database (1304) Unable to write a shadowed header for file C:\WINDOWS\system32\CatRoot2\tmp.edb. Error -1022.
Event ID: 490
Event Category: General
Description: svchost (1304) An attempt to open the file "C:\WINDOWS\system32\CatRoot2\tmp.edb" for read / write access failed with system error 1392 (0x00000570): "The file or directory is corrupted and unreadable. ". The open file operation will fail with error -1022 (0xfffffc02).
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Then while I was getting all these errors, I was working at the same time, with no problem. Didn't even know I had any error till I looked later! When I was ready to shut down this afternoon so we could go for out turkey.
This is when I saw all of those error and this biggy again:
Event Type: Error
Event Source: Ntfs
Event Category: Disk
Event ID: 55
Date: 11/23/2006
Time: 8:34:35 AM
User: N/A
Computer: THEBEAST
Description:
The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume C:

Why is this happening, and what can I and should I do about it.
Thanks!
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Windows XP Home Edition Service Pack 2 (build 2600)
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2.00 gigahertz AMD Athlon 64 X2 Dual Core
256 kilobyte primary memory cache
1024 kilobyte secondary memory cache
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Board: ASUSTeK Computer INC. M2N-E 1.XX
Bus Clock: 200 megahertz
BIOS: Phoenix Technologies, LTD ASUS M2N-E ACPI BIOS Revision 0203 06/15/2006
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WDC WD4000YR-01PLB0 [Hard drive] (400.09 GB) drive 1
WDC WD2000JB-32EVA0 [Hard drive] (200.05 GB) drive 2
WDC WD20 00JB-00FUA0 USB Device [Hard drive] (200.05 GB) drive 3
IOMEGA ZIP 100 [Hard drive] drive 0
HP photosmart 7700 USB Device [Hard drive] drive 4