PO Format / PO Overlay

We have a custom PO Overlay - currently from MHC - to get our logo and terms onto the PO.  We've got a new company being built which will necessitate altering it, so my director is curious:

1. Are you using a custom overlay?
    a. If so, what elements/fields not in the prt file are you adding
2. The great account issue - AP10 has a single field, nearly everyone has several accounts for several ship tos.  Have you found a way to include account number on the PO?
    a. If so, how?  Multiple Purch Froms?  Does this require multiple PO25s? Other?
3. Portrait or Landscape?
4. Do you have the vendor terms (Net30, etc) on the PO?  If so, where are you pulling it from AP10.1 or AP10.2 or other?


And a tangent - do you monitor your vendor response compliance to fax/email orders?  We find that only about 30% of the orders come back at any given time.  The buyers must follow up for confirmations to be sent.  We notice the same results with GHX MetaTrade.  Any strategies for getting vendors to acknowledge back the manual orders?