OK Meese, I know you 've been trying to beat this into my head and I haven't been getting it, but I'm seeing the light now.
Even tho the X: drive was already mapped by my login, that wasn't enough. I had to map a new drive letter (I chose L

to the server, then delete it just like you explained. Here's what worked....
NET USE L: \\servername\data
xcopy c:\abb\*.* L:\abb\bkup /d/s/e/v/c/z
NET USE L: /DELETE
Thankyou.
My next problem is that it wants a username and password to map the drive. When I put it in manually, it works, so I'm now looking for syntax to put it in the batch file. Can you help?
Thanks, Dave