jaycrew: The Core Duos run excellent. Applications run very smooth and launch very quickly. I'd say the only bottleneck in the system is the 5400rpm hard drive. I could switch it out with a 7200rpm with a larger cache and probably see a difference in loading applications.
drjeff2b: Reformatting is a very simple process as long as you have three things: a bootable installation CD for Windows, CD with drivers, and a repair CD for MediaDirect. Here's a pretty simple guide for the reformat process. I'm writting this from memory, so there might be some specifics that I'm missing, but this should get you through the reformatting process. There are tons of resources on this board if you get stuck anywhere through this process.
Step 1: Put the Windows installation CD in your CD/DVD-ROM
Step 2: Reboot your computer
Step 3: Hit F8 at the boot screen to bring up the boot device selection
Step 4: Select your CD/DVD-ROM drive from the menu
Step 5: Follow the prompts on the the Windows installation until you get to the part where you select the location for the install
Step 6: Use the installation functions to delete the C: and D: partitions, leaving the F: partition untouched
Step 7: Select the Unpartitioned Space for the installation
Step 8: Use the Full NTFS Format option on your unpartitioned space
Step 9: Continue the Windows installation, following the prompts as you go
Step 10: Once the Windows installation is complete, use the drivers CD to get all your devices up and running
Step 11: Repeat steps 1-4, this time with the MediaDirect Repair CD
Step 12: Follow the prompts to repair MediaDirect
Step 13: Have fun with your newly reformatted computer
NOTE: If you are using Dell's Windows XP MCE2005 installation CD, you will have some extra Media Center applications installed after your first login. If you don't want these, you can easily remove them through the Add/Remove Programs in Control Panel.
I highly recommened getting the latest drivers and MediaDirect repair utility from Dell's website. If you do this, remember that the drivers for the card reader are under the Chipset section as Ricoh R5C832. Also, if you want to watch DVDs in Windows instead of MediaDirect, you will need to request the Cyberlink PowerDVD installation CD from Dell, as they don't include it with your system.