copying database backup file

This is a pretty basic question, but I've generated a backup file for one of my SQL 2000 databases, and I need to copy the backup file to another computer so I can burn it on CD. Whenever I try to copy the file, I get an error message saying that the file is in use by another process and can't be copied. I have tried detaching the database, shutting down Enterprise Manager, stopping the MSSQL service, but all to no avail. There must be a way to do this, but I can't get it to work. Does anyone have any ideas?This shouldn't happen for the backup file, unless you are accessing the backup somehow. What is the filename you backuped up to? have you tried stopping SQL Server, then copying? Since I don't want to assume anything, I'll add this: make sure you are copying the backup file, not the mdb or ldf file.|||If you used Enterprise Manager, you may want to make sure you remove the backupfile from the SQLserver Backup options in All Tasks. But it is intriguing that the file is still in use.|||I tried all of the suggestions posted, but the only thing that ended up working was to rename the backup. The original backup had the same name as the database, but once I made another backup with a different name, I was able to copy the file. Thanks again for the help!