what are needed to make my own SNMP Agent and server?

Hii, I want to make my own snmp server and agent.with my own MIB and OID's. how can i do it??and where to start??

And if i want to use windows SNMP service and extend it and insert my own OID's into its MIB then ,is it possible??.n if yes,how can i do this??

There is an excellent open-source implementation for the .NET framework called SharpSnmpLib. It can implement a normal SNMP server, and it allows you to load your own custom MIBS.

A couple of tips:

• You can find existing MIB's at oidview or the Cisco Mib Browser
• Avoid v3 and the RFC's that belong to it (in fact, I'd avoid the RFC's at all, they're confusing and cover many areas that were not adopted)
• Test early and often with machines as close to the production setup as you can