Had a lot of hopefully self-inflicted problems with my Dell Western Digital 1200JB. I had another non-Dell WD 1200JB that I attached as a slave and installed as an NTFS drive without problem. But the Dell drive failed as a slave while preparing as NTFS with partition magic, so I tried it as a master and as CS. Knowing that these are sold for installing in Dell systems, I recalled that my Dell at work with it's IBM drive only worked if set as CS for some odd reason, so I thought maybe Dell had these working the same way. Then I tried installing WIN2k when it was attached as a slave and that bombed out during the process and hosed up my master Win2k install boot partition. After getting my master working again [lengthy idiotic non-Ghost reinstall], partition magic allowed me to get the Dell WD set up as an NTFS slave, but I haven't tried to get Win2k on it as a master again yet. I'm still recovering from how messed up everything got just trying to get the Dell drive working!
Anyway, at least I didn't have a DOA with click of death! Best of luck on RMA - shouldn't have a problem with that, especially if you ship to them using the same box and innards. I remember how particular IBM is on their packing, just looking for any excuse to blame the drive failure on your improper return packing. The way it worked with the IBM drive was that if it was less than 30 days they expect you would RMA with vendor, otherwise you'd RMA with them. Don't know how WD and Dell handle that. I would think you'd prefer RMA with Dell as you should get a new drive. If you RMA with mfr, usually you get a remanufactured unit.