I would be grateful if somebody can advise me how I can build site same as http://www.guide2marbella.com/property/, namely, I want to creat same search form on my site where I can search items by location, etc. I am very new to web development and know only HTML and CSS.

What I need to learn to be able to create site like this and is it possible at all to do it on my own without hiring any programmers?

Thank you in advance!

You will need to learn the following:
VB Script, Case statements, conditional statements, loops, SQL and database management.

The page you referenced builds a where clause for a database query using the combo and check boxes.

I suggest you look at ASP.net because Classic ASP does not have the nice GUIs and debuggers .net has.

hth, good luck,