I read a lot about the importance of web services and I created some such as validating user login, user application rights, ... etc.
But I think that there's a lot more that I should do with web services.

Any idea how can I utilize the web services?

Our environment contains the followings :
- SQL 2000
- Client applications (.NET, VB6, VFP6, Access)
- eProcurement System
- eRecruitment (CV System)
- Intranet