Sign up for the IS Tech updates.  That includes a View only version of AR-A so people outside accounting can look at costomer information without being able to change it.  We also added the abiltiy to limt the CM-A link into AR-A.

If you had the updates installed, you could allow them to view AR-A and have access to CM-A where they could change things like hte address or phone number and then you can also limit the ability of CM-A to open AR-A and yet the edits made to address and such in CM-A could automatically update the customer record in AR-A.  You just need to subscribe to the updates.  See www.istechsupport.com/updates.pdf for a description of many of the improvements and enhancements.

I agree that it would be helpful to limit access to the credit screens (maybe via a password).
 
Our CSRs need access to enter new customers for our orders (we probably get orders from 5 or so new customers every day) but I dont necessarily want them being able to change the credit info (this is more an A/R function).
 
I am not sure if being able to edit CM but not AR-A will work for entering Sales Orders for new customers.