From what I understand Paul, you don't want to take Dbol on its own. You will notice a major difference immediately, as it's very fast acting, however you will loose all your gains very quickly as well, and it will shut down your HPTA (your own testosterone production, etc).
It might be possible to do solo of other types of anabolic steroids, however they've warned me against it when I questioned a few people(*note1*). Your safest option is to use Testosterone (longer ester like Test-E) as a base, and if you're really itching to do the Dbol, only use it to kick start your cycle.
Please correct me if I am wrong on any of these points, but this is what I've gathered thus far.
*note1*: I've heard of some people getting away with doing a low dose winstrol/anavar only/combo cycle, but these are anecdotal and I am unsure of their real results. You would still need or want a pct like clomid/nolva combined (maybe hcg as well?).