I don't have that board but my DG45ID with 4 identical drives in a RAID 0+1 configuration takes care of drive replacements automatically from within the RAID functionaility of the BIOS (without needing to have any RST software installed at all). You just power down, swap the defective drive for a blank known good one (I'm not even sure it has to be blank) and on the next boot the BIOS will warn you about the degraded RAID but it still boots up. In the background the BIOS will do its thing and rebuild the RAID volume (although it may take quite some time so leave the PC on for a couple of days). Perhaps this is different for your board (or with RAID 5) but have you tried this - if so, what did the BIOS report on POST (both immediately after turning it on with the new drive and after a couple of days left powered on)?
What RAID software (if any) did you have installed on the system before the drive failed? The version number of RST you've given isn't listed in the download section of Intels website for your board here: http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Desktop+Boards&ProductLine=Intel%c2%ae+3+Series+Chipset+Boards&ProductProduct=Intel%c2%ae+Desktop+Board+DP35DP
You may find it simpler to just replace the drive and reinstall everything from scratch using backups if it's not rebuilding itself automatically - you have got backups of your important data haven't you?? Having a RAID setup (even with redundancy) does not mean there's no need to backup valuable data periodically because there can be many situations where that RAID volumes redundancy won't be any help at all eg simultaneous multiple drive failures from a power surge and motherboard failure are two common cases.
In the past I have had bad experiences with rebuilding raids in the BIOS and prefer using the Windows Utility when possible. I installed version 10, but it looks like I should have installed 9. Should I roll back the driver, uninstall 10 and then install 9. Just worried that if I roll back the drivers I might screw up the RAID
Thanks for your assistance
In the past I have had bad experiences with rebuilding raids in the BIOS
What I meant is that the native RAID functionality in (at least) my boards BIOS AUTOMATICALLY took care of things after a long period of time - ie no action was necessary. Is this a possibility for you or is the PC currently unusable in its current state?