Remotely stop/start NT services

I wish to schedule a backup an SQL 7 database from another PC. I need to stop some of the SQL services (mssqlserver & sqlexecutive), then backup the databases and then re-start the services. How can I do this from another NT system running the backup device?

At the moment I use the NT Task Schedular to run a batch file (cmd) which in turn runs NT Server Backup. I just need the commmand for for remotely stopping/starting services.

Thanks for any help