To be honest, if you've played with any sort of matched grip for a long period of time, it's a good idea to give up traditional.
The transition from traditional to matched is simple. But the motions for traditional grip are entirely different. It's not impossible, but there's really not much point in you making such an effort do it, unless you understand the basics of traditional grip and feel you'd be more comfortable.
I never play trad grip, but when I'm on my practice pad, everything I work on, I work on twice. Once matched, then again traditional, or vice versa. I've always done it, so if a gig ever called for traditional I'd have it.
If you're still hell bent on learning trad, try this for a spell. When you're on your practice pad, or even your kit doing excercises, just do them twice, once with each grip.
AND! a real tip that'll go a long way: it's all in the wrist. When playing traditional grip, it's easy to use too much thumb, since this is easier to get a good sturdy stroke. But it's improper. Exhagerate (sp) the wrist movements, so you'll develope good technique.
Drumming with both matched and traditional for over ten years. :)