5punk

Right click on My Computer and select manage
Click on the Disk Management tab
If the disk appears in there, but with no drive letter assigned, then that's why it won't appear in My Compueter/Explorer as a drive letter.
You should then be able to right click on the disk and format/assign letters/partition etc...

Ah ha! That's done it. cheers Woo

hmm, ok. not nearly there. PSU is faulty. Stupid thing....

ah well.