Hey, everyone. At the moment, I'm giving my best shot at producing some dubstep songs. However, my biggest problem areas lies in tree things;
1) I really want to work with sound fx and samples, but I'm TERRIBLE at it
2) I'm not too good with creatin a solid drum track, and MUCH less, finding decent samples.
3) I'm pretty limited when it comes to number of instruments (VST fx), and so I need a way to wide  and make fuller tracks.

If anyone has tips, PLEASE! Leave them here! Thanks!!

The question is tougher than it sounds because dubstep has changed a lot from it's underground UK genre days. Were you looking to create the "classical" dubstep from the earlier days like digital mystiks, loefah or Skreem? Weere you looking to create the more mainstream sounds of skrillex or the radio pop friendly songs like "too close". Although they obviously have enough commonality to be lumped in the same category, keep in mind that chubby checker and suicidal tendencies are both technically rock and roll. As far as the three specific points you mentioned. The best way to get better with fx and samples is practice. It would help to know how you specifically were trying to use them. "samples" covers everything from experimenting with single cycle wave forms to create ridiculous bass to looping a melody as a chorus. As for creating drum tracks, start with audio loops similar to what you want to create and then move on to rearranging those loops or mangling them via filters or stutter programs like glitch. You can even get midi drum patterns and alter those while you learn to create your own. In old school dubstep the basic drum pattern is one main kick with one main snare with the rest being sparsely filled in. If you want I can post some basic patterns. As far as the third item, you have great synths for dubstep right in Sonar. The sterotypical wobble bass (that wub-wub thing) is easy to create in just about any soft synth. For me pentagon was the easiest to get a really fat version, but have since moved on to creating it in z3ta, both of which you already should have. In any case, the only sounds you might have some trouble creating with stock sonar synths is the fm8 growling patches that skrillex creates. There are good patches available for sell for z3ta+. check them out in the cakewalk store.

Lazerbass is a great Reaktor synth to check out if you're into dubstep. I'm not to be honest, but I love playing around with that synth and have even incorporated some of the sounds into my non-dubstep tracks. It came as part of the Reaktor package that comes with Komplete, so not sure if it's free or not. Maybe it is, and plays in the free Reaktor player. Worth checking out. 

Thanks for the replies, guys. I went ahead and gave some a shot, and I posted some of my results in the Songs forum :)

cool. i will check them out

So I have a question, okay what do I need to do Dub-step in my music? I have Rapture is that enought?

Yes and no. Again, it depends on whether you are trying to emulate the styles of previous dubstep artists or trying to break new ground. Dubstep kicks and especially snares tend to be layered. Someone could theoretically do a dubstep song using just Rapture sounds but it would be awkward. Rapture would be great for bass sounds, especially if you are into resampled wave cycles. The leads and pads would be covered as well.some snare samples would probably be the bare minimum you would need for most dubstep songs.

Thanks a ton! so could I do the electric break downs with Rapture?

by breakdowns are you talking about *digs for well known examples* the sterotypical "wub-wub" sounds found on pop songs like "too close"? If so, that is fairly easy to create on any synth. The basic formula is to modulate the cutoff of the lfo. If yiou have a midi controller, a good way to get a feel is by mapping the cutoff and/or rate to your modulation wheel or one of your knobs. twist enough and you will get a feel