Creating Web Application to accompany Access Contact Database

I created a relational Access Database as described in this previous thread:

https://www.experts-exchange.com/questions/21360503/Help-with-Contacts-Database-reworking.html#13614326

I am now developing the Web Interface to accompany this in dreamweaver MX 2004.   I am using standard ASP, and am presenting the first of my questions.  

I need to find a way to create the master contact record first in my database, then be taken to a page to directly edit it.  My dilemma here is that at this point I don't know the primary key ID for this entry, and therefore can't do it my usual way with passing the ID.  Any ideas for this?  Or if anyone knows a better way to handle this that would be great.  I also do not wish to just pull the last record created in the database as multiple users can and will be using this at the same time.

Thanks

-JQ

P.S.  In the link above to the previous thread, there is a kink to a recent screenshot of my database at the bottom of the thread.