sql backup error

[김인엽]

When I intended to backup sql db, this error message showed..
How does it works??

os:win2000, no win2000 service pack installed,  mssql 7.0, 

Client ended transaction DB-LIB  message: Backup or restore operation terminating 
abnormally

I have another question.
Is there any system requirement(win2000 service pack or sql service pack) to backup 
sql db??

Thankx..