Creating our own dll for UDO

hi all

i have read that there is a way of creatig our own dll's

for UDO in B1, now my problem is that i am totally unaware of the above said so plz anybody out there can plz help me in understanding how to create our dll and use it in UDO to enhance its functionality.

i ned it desperately so plz do help me.

Thanks

Vishwas Srivastava