I use daz studio 3 advanced and I understand the feelings of confusion.  The, where did that rascally program put the obj files, and why can't I find the texture maps.  My computer is windows 7, however, I have used windows xp before, so I will try to include information on both.  I can't claim to be an expert at this, but I will try my best.  So, here we go... I'm sure you noticed that the files from Daz programs tend to be scattered willy nilly.  And you probably also noticed that the program doesn't make things easy.
In order to make the files you will need a few important free plugins, the prop exporter, found at http://puzzlekiraly.hu/lom
   , this plugin allows you to save as an obj file, you will also need the daz studio 3 script development kit, I'm assuming you at least have the free version of daz 3, it won't work on daz 2, you can get that for free here http://www.daz3d.com/i/shop/itemdetails/?item=9548 at the daz store, this kit makes it possible to utilize 3rd party programming scripts, it's a must for any true daz fan.  there are other optional plugins, however, let's stick to the necessities for now.  You said you made a table in Daz, very nice.  So now what, the first thing you will want to do is create a blank file folder system, I made it up, so don't try searching for it.  This will consist of a few important empty folders.  Go to my documents, add a new folder and name it works in progress.
Open this folder and add another named Runtime.
Then, open runtime and add three more folders in it so that the screen shows three folders at once.  Name the folders " Geometries " " textures " and " libraries " open libraries and add a new folder inside it called props.  these folders you just made will be very useful in the future.
go back to the "works in progress" folder.  Create a new folder called table.  Copy runtime, open the table folder, paste runtime open runtime. Now, enter the geometries folder, and add a new folder called table.