InfoPath Dev

Hello all,

I have an Infopath form that I created for customers to submit work requests to a list on a Sharepoint 2007 server. These forms will be updated by a group of people. How do I keep my team from clobbering each others updates to this form?  Is there a way to put the form in an 'edit' state locking it so that it can not be updated while that individual has it in that state?

thanks in advance! 

So there is one form for each work order with multiple users updating each one?

I typically store my forms in SQL server using the Database Accelerator. Qdabra Database Accelerator Suite Version 2.1 - Developer That gives file locking to alert the user and the second user only gets the form in read only view if someone else is editing it.  I am not sure what can be done with a document library.