The ASUS P4C800-E dlx mb, as you stated, does have the usual pri/sec IDE connectors. There are also 4 SATA connectors on the mb. Two of them are handled by the onboard Promise controller. The other two are handled by the intel ICH5R controller and are listed in the BIOS as the third and fourth IDE devices.
If I am misunderstanding something here, someone please set me straight!!
I do see one problem, you cannot install a SATA HD on an IDE channel. The two connectors (SATA, IDE) are very different. When buying your HD you have to specify either a SATA or IDE. There are IDE->SATA converters, but I don't think there exists a SATA->IDE converter.
Your MB or a plug-in controller card has to be able to support SATA for you to connect it.
Most MB have only 2 IDE channels (4 IDE connections), so if you have 2 DVDs as masters then your MB better have a SATA port that you can boot off
It might have something to do with that i had them in an unventilated case with temps reaching >60C, but nevertheless it was when WD had put their waranty to 1 year, so I had my IBM Deathstars that were still under guarentee when my WD went belly-up! So i am slanted agaist them for that reason as well. For me Seagate is standing behind their products for 5 years, if WD is only offering 3 I would like to know why, is it to save money or because they think their products don't usually last 5 years?