Cannot Open 2 ext hdd in My Computer...

Hi, im about to install a fresh copy of Win Xp Pro over my old os. Atm im c/ping everything to external hdd's. But ive run out of room on 2 of them. And both my 3rd (Wester Digital http://i72.photobucket.com/albums/ [...] net/3.jpg) and 4th external (Hitachi http://i72.photobucket.com/albums/ [...] net/4.jpg) are being read by my pc. But in My Computer i cannot see them, so i cant open them up to transfer the rest of my junk to them.
s/s of my Pc spec.
http://i72.photobucket.com/albums/ [...] et/1-7.jpg
http://i72.photobucket.com/albums/ [...] et/2-3.jpg

Here are s/s of the 1st and 2nd ext hdd in My Computer.
http://i72.photobucket.com/albums/ [...] gnet/5.jpg

Any1 have any ideas?

The first two links are not working.

To me, an obvious question. If you disconnect the 1st and 2nd USB external drives, do the others work? Or do they work if plugged in where the others were? If the others are full, you don't need them plugged in right now, eh?

You were likely re-posting when I answered, so adding this to make sure you know someone responded above.

Go to Computer Management then Disk Management and look at the drives listed there.

Each drive should be listed as Healthly and every primary partition on the drives should also either Active or System. Each should have a drive letter assigned. If it doesn't, right-click on the drive and assign one.

It's possible that you previously set the externals to use existing drive letters and this is confusing them.

I'd also give those "local disk" drives more useful volume labels, gotta be confusing sometimes!

Good to hear! Good luck on the backing up.