[postgis-users] 3D filtering?

[Decarlo, Thomas R. (LARC-B702)[NCI INFORMATION SYSTEMS]]

I've got a question about processing 3D geometry data and I'm not sure
if the query functions in PostGIS can help me. 

I have two tables (A and B) of 3D point features in a Euclidean space. 
I want to select all the points in B that are NOT within some distance
(S) of any of the points in A. 

Can I do this query using PostGIS? If yes, what would the query look
like?

Thanks!
Thom
--
Thom DeCarlo
-------------------------------------
     That Which Does Not Kill Me
     Can Still Hurt Really Bad.