Windows Maintenance Software

Hello all,

I work for a small company were I am in charge of doing the administrative work on our computers. Involving the simple updates and maintenance. I currently use Norton Systemworks at home to maintain my computer. I was wondering if anyone would be able to tell me if there is a better program out there for maintenance. I am looking into getting a program for work. Is Systemworks a good option or is there something better. We are running Windows 2000 and XP. Any help is appreciated.