Scripted Metabase backup

I've been able to script the backup of the metabase and have it overwrite
the existing file successfully using IISBack. Is there a way to have this
process dump the backup created to a different location other than
Winnt\system32\inetsrv\metaback folder?

I don't want these backup files growing out of control so the overwrite
feature is exactly what I want but the file is not put where I want it.

I was trying to get away from having the batch file delete the contents of
the folder I want the backup in, creating the backup and then copying it to
where I want.

Just trying to KISS

Any ideas?

TIA
DDS