Disk in drive is not formatted

I have a Western Digital 200GB Serial ATA hard drive in a Windows XP Pro computer that I was using and had lots of data on it. I was copying files to it and it was extremely slow so I canceled the copy and rebooted the system. When it came back up I could see the drive in My Computer but when I tried to access it I got an error message that the drive was not formatted and asked if I wanted to format it. I did not format it. Is there any way to get the OS to recognize this drive and get my data back? Thanks.