I am attempting to recover the data from an old *Compaq Presario desktop 20 Gig Western Digital hard drive *with* Win XP Pro *installed on it.Unfortunately, I did the classic mistake of not backing this drive up

and I'm having a hard time as a...
I am attempting to recover the data from an old
Compaq Presario desktop 20 Gig Western Digital hard drive with
Win XP Pro installed on it.Unfortunately, I did the classic mistake of not backing this drive up

and I'm having a hard time as a result. The drive began the infamous clicking sound and rendered the computer it was installed on inoperable. I have since connected it as a slave on another old
Intel Celeron 1.1Ghz Compaq Presario running
XP Pro in order to try and work on it. Initially the drive would click away and I could not access it no matter what I tried.
I then read about the "freezer" trick and connecting the drive upside down instead of mounted in its normal position. After sealing the drive in a Ziplock bag and letting it freeze for a few hours I reconnected the drive. The drive stopped clicking and lo and behold it was visible on
Windows Explorer as well as
Device and
System managers!

I then frantically attempted to copy as many files as I could but my "miracle" slot of time lasted for only about seven minutes, then the clicking began and I was back to having an inaccessible hard drive. I was only able to recover a small portion of the data I am trying to save.
The interesting thing is that I have since used the freezer method a few more times and the hard drive no longer clicks at all. It seems to spin and whir almost normally and is recognized by the
Windows XP System Device manager, where it is reported as functioning "normally", yet I can not access the drive from the
Disk Manager Tool or
Windows Explorer, or from a software program called
Find & Mount in order to give it a drive letter. I am now officially stumped.

Any help or ideas would be greatly appreciated....
HELP.. Thanks.