I want to filter a data view WebPart, (that lists data from a list
in another WSS site) with the site's Title (of last part of the URL)

Situation is as follows
I have a List (Contacts) in a WSS site (e.g. http://xxxx/Admin). This
list has a extra text-field: "Customer".
For each customer I have a subsite (http://xxxx/Admin/CustomerA ,
http://xxxx/Admin/CustomerB , ...)

On that sub site I place a dataview that lists the contacts. I want to
filter this list, based on the site's Title, so I see only THIS
Customer's Contacts.
I can also use the last part of the URL-path (e.g. CustomerA).

Is there a SharePoint of FrontPage guru that knows the answer to this
problem?