Import filter. Is that possible?

I'm really new to mappoint. In fact I started working with it this very monday. The compagny I work for is rerouting all its trucks and well you guess what they want hehe.

Anyways, So far I've managed to do basicly everything I needed to. And btw, since yesturday this site has been a nice ressource for my questions but I havent found an answer for this 1.

I have all my clients on 1 xml file and each client has a specefic route assigned to him. There is 25 routes. I want to know if there is a way to import my data let's say only for 1 route in the 25. I dont want to have create a new sheet for every client unless I really have no choice.

btw, thnx in advance ;)

While I'm asking, heres another 1 that I'm shure you already answered a million times but...

If we buy a Canadian Postal Code database, can we replace the 1 that mappoint 2002 is using with the 1 we just bought?