Yep! Last night! I was overjoyed! Textures AND lighting.
But only in Quarke (I used the new 6.3) as a quake 3 file. (You can Buy Quake III with 1 and 2 for £20 now!)
1.Make your map with textures. I used the default box room that you start with in Quarke and textured it with the DARKMATTER textures. You also need a light and a info_start_point at least.
2.When finished, Use the command on the Quake 3 menu to export all the textures you have used(preferably your own!

) Put them into a zip.
3.Use the "recompile all"(I think thats what it's called) option in the Quake 3 menu to make the BSP with lighting et all. Add that to the zip.
4.Move the zip to the directory where you want to put your game and rename it with .pk3 extension. .pak did not work.
5.In your code use the :
load bsp "your_pak_name.pk3","your_bsp_name.bsp"
6. Et Voila!