|Michael, we do not send help via email. This is a public forum. Posting your email in the open as you have is an invitation to receive spam. I suggest you edit your post to remove the email address.|
If the adapter is not showing in device manager then it may not be working. Look for the 120 drive in Windows Disk Management. You may just need to take ownership of the files/ folders. Look at the link below to learn how to take ownership if the drive shows up in Disk Management.
You can't transfer your programs unless you clone the old drive to the new one. Other items, like personal files can simply be copied and pasted.
Are you sure your laptop can run a 500GB hard drive?
I just realized you may be transferring from the 120GB inside the laptop to a 500GB externally. If the intent is to install the 500GB into the laptop the interface must be the same type. You can't go from IDE to SATA or vise versa.