well there aren't really any 3D graphics, what you might mean is stonesense overlay which was / is an isometric overview which was usable in the DF2012 (34.11) release. but even in the old version the overlay was still kinda experimental if i remember correctly and the most functional way to play dwarf fortress is with one of its graphic sets / tilesets. there are a bunch of current ones out there, some might need an extra download & extraction into the /LNP/graphics folder of your starter pack package but there are enough options out there for you to use.
i am testing the different graphic sets myself out at the moment and at this wiki-page you can see a good overview of the different graphic packs with a comparison picture for each of them:
ironhand / iron16: has a more medieval look to it and slightly darker colored
- an updated ironhand version isn't in the current starter pack but if you extract the following zip / rar file and copy it to "x\Dwarf Fortress 40_09 Starter Pack r1\LNP\graphics" (also renaming it to ironhand16 would be good cause the folder is called just dwarf fortress after extraction) then you can also select the graphics pack from the starter pack.
DL-Link (DFFD):
http://dffd.wimbli.com/file.php?id=7362phoebus: is the most commonly used as it seems which has a nice clear look to it and always seems to be the fastest updated one and is overall the most well-rounded package because it has a complete set of dwarves, critters, creatures and civ's where other graphic sets partially take phoebus graphics for some (currently) missing creatuers.
- it is already pre-installed with the starter pack
spacefox: is my personal favorite, it has a cartoonish look to it and very clean and colorful visual style to it. leocean doing a great job updating and improving the current version of spacefox and afro has some nice new creatures & critters in similiar style on its way.
- the pre-installed spacefox version in the starter pack still seems to have some missing entries and i highly recommend leocean's version, he posts his updated versions in the official spacefox thread:
http://www.bay12forums.com/smf/index.php?topic=129219.0afro is also working on some really nice new creature / critter / animal graphics in similiar graphic style to spacefox:
.. this is as far as high fidelity graphics you will get, but make no mistake this game is deeper than any other dwarf fortress clone or "df inspired" game which has come out recently and will come out. the game is in developement now for 12 years it seems and it packs a huge punch and you can (and will) spend literally hundreds of highly entertaining hours with it.
...and if you think you have seen enough then there is also the masterwork mod which increases the content by around 6 times and gives you 8 playable races to chose from:
http://www.bay12forums.com/smf/index.php?topic=125633.0... well i went quite offtopic here^^...sorry.
bottom line: stonesense needs dfhack, dfhack isn't available for the current release and even when its available then stonesense will need some further developement because it wasn't 100% bugfree at last and the current dwarf fortress versions have some major changes which will give stonesense some troubles (multi z level trees for example). for now just play with graphic packs
.