Help required on query

Hi, I need to produce the following query:

'customers who have used a specific suppliers web service, more than 30 times between 2 specific dates'

(I have several tables including a supplier, customer and supplier web service table).

Any ideas?? thanx a lot!!

See if this helps or sparks some ideas that is more specific to your environment.

Select custFN, custLN, c.custid
From customer c Join Supplier s
On c.custid = s.custid join supplier_webservice sws
On s.custid = sws.custid
Where usage > 30 And usagedate Between date1 And date2

Okey dokey, thanx a lot..I'll have a look and think about that one!