I've done a multi-account-by-country gateway mod for Moneris and VirtualMerchant gateways.... I'm sure we could swing it for this.
Do you still need this mod? (I see your post is like 9 months old!) 
done it before
Fri, 01/16/2009 - 21:09
#1
done it before
beanstream TD payment gateway By: jimijamesi (20 replies) Tue, 11/20/2007 - 17:01
- Trying to use this. By: apexskier (08/21/2010 - 02:10)
- Debit Card Support By: drupal.in (02/10/2010 - 01:14)
- Ubercart 2.x port By: Mirabuck (07/23/2009 - 21:08)
- Small bug fix By: rhubarb-media (10/26/2009 - 17:00)
- Transaction Id By: drupal.in (02/10/2010 - 01:17)
- Re: Transaction Id By: codilechasseur (06/15/2010 - 13:11)
- Transaction Id By: drupal.in (02/10/2010 - 01:16)
- Adding Module to Drupal Community By: maasen (10/30/2009 - 13:29)
- Adding to module to d.o By: Mirabuck (11/01/2009 - 07:48)
- Re: Adding Module to Drupal Community By: Ryan (10/30/2009 - 18:38)
- Transaction Id By: drupal.in (02/10/2010 - 01:17)
- Small bug fix By: rhubarb-media (10/26/2009 - 17:00)
- Re: beanstream TD payment gateway By: keithloh (03/03/2009 - 13:13)
- Interested in Gateway By: crtvgrndwrks (04/17/2009 - 14:06)
- Interac By: aeneads (05/08/2008 - 01:12)
- Urgent: Custom work on this Module By: designbysoil (03/31/2008 - 17:28)
- done it before By: suydam@drupal.org (01/16/2009 - 21:09)
- Ubercart 2 support? By: euchrid (02/26/2009 - 18:11)
- done it before By: suydam@drupal.org (01/16/2009 - 21:09)
- Re: beanstream TD payment gateway By: KillerJerseys (01/18/2008 - 02:23)
- Re: Re: beanstream TD payment gateway By: simonv (01/23/2008 - 19:34)
- Re: Re: Re: beanstream TD payment gateway By: designbysoil (03/13/2008 - 20:19)
- Re: Re: beanstream TD payment gateway By: simonv (01/23/2008 - 19:34)
- Re: beanstream TD payment gateway By: CLiDE (12/21/2007 - 13:18)