tec4 - 11:47 pm on Jul 6, 2012 (gmt 0)
When you say "if user selects an area I am unable to filter all properties(SF, MF, CC) in that area." I assume you are talking about trying to query the MLS Feed directly from an end user on your site?
I've always used the PhRETS client to simple be the middle-man between myself and the Feed and use it to update my DB/Tables on my local server. That way, you can do all your search filtering on your server's side like eelixduppy had stated.