My first one was a D. capensis also(Istill have only three sundews though) The capensis is way cool, once you see it curl around a bug for the first time you'll be hooked. OK, here's what I would do. first off ,do you have any goldfish bowls? If you put the capensis in there it should increase the humidity a little bit. (dont take it out and replant it, keep the D. capensis in it's original conainer and move it into the bowl.) If you don't have a goldfish bowl then you can use a plastic soda bottle with one end cut off. Also, make sure that the plant is sitting in about an inch or so of water. Secondly, I would move the plant into a room that already has a little light in it, like a bedroom perhaps. You might want to get a compact plant light that's at least 80 watts. If you want you can also use a couple of florescent tubes, they take up more space but they're alot less costly. I personally have been using a 30 watt compact flourescent bulb, which I've heard isn't enough. After moving my three sundews under it though, they started to dew up real niceley so who knows.
All right, good luck with the D. capensis.
-peace
-Gabe