Don't know whether this is the sort of thing your looking for but there is a sales system called Telemagic (
www.Telemagic.com) this product is developed in Fox and can be customised if you buy the Enterprise Edition (at least it used to be called the Enterprise Edition.). This system does integrate with accounts but I'm not sure whether thats just with Sage Accounts in the UK !
Anyway hope this helps. If not, are well at least it's nearly Christmas
J