I can create html pages and most graphics and other elements that go into that.... BUT I have a real estate agent looking to create a website and he wants the ability to do property searches...and his potential clients to do property searches like many of these main stream real estate companies do. HOW do they do that ? Is it just a "link" that takes them somewhere else (although appears to stay on his website) or what ? Can anyone help explain this in SIMPLE terms (so I can understand it).

Maybe I can design the bulk of the design, and hire/find a super geek to do the search part.... Not sure where I would find the right person for that ?

Thanks in Advance