I am trying to extract data from a list which is set up as follows:

A2 Microsoft   B2 31/12/2004  C2 10
A3 Microsoft   B3 31/01/2005  C3 11
A4 Microsoft   B4 28/02/2005  C4 12
A5 IBM           B5 31/12/2004  C5 66
A6 IBM           B6 31/01/2005  C6 69
A7 IBM           B7 28/02/2005  C7 72
Etc

In one formula I would like to be able to extract the value from colum
C that meets a crierion in both columns A and B - for example, IBM an
31/01/2005  

I'd really appreciate it if someone can show me a formula that will d
this!

Many thanks