What exactly happend to the drive? Is it dead, passworded or just not been used for a while in another PC?
The error you give there suggests the drive is blank or not initiated. Running all those other programs might not have been a good idea.
For a passworded drive, use FileACL.exe : simply put in the Documents location, rund CMD and type command to unlock password protection (I can post the exact command to run later)
For a non initiated drive, use Disk Manager : Right hand click on "my computer" and select Manage". Then click on "Disk Manager" and it will show you a list of drives connected to the PC. Find your drive with the photos and right hand click and select "Initiate".
But.... if after the drive is initiated, you may hit 3 scenarios....
1. The drive gives full access to original files - great, go nab your pictures from C:\Documents & Settings\User folder (XP) or C:\Users\user folder (vista)
2. The drive shows but is limited access - that's ok, go get FileACL.exe and run it and that'll unlock the folders etc.
3. The drive shows no active partitions - bad, the HDD has been wiped and will need a partition recovery (different from file recover). The chances of you getting things back isn't great, but it's possible. I'll need to speak to my mate who does file recovery for a living as to what he'd recommend after that, but I know I've done it a few times without having to send the drive away to a specialist so keep your chin up!
I can't help any further without more information sadly.
~Bex