What are your settings now ? As a rule, I generally use Quality ---->2000, Filter Radius ---->0.4 & Oversample -----> 2. Though you can adjust your settings depending on the sharpness of your image ( or non-sharpness ...lol ) etc.
But, of course ... go here , and in particular the two tutorials offered (Alison's and Fran's found through the links on the page) will walk through the settings and stuff. :o)
This has been discussed quite a lot previously, i went on a little search and got to page 32 of 45 before i realised i'd gone past them. You don't want to go down there, boy does that bring back memories:O
Yeah, sorry about that ... I was just about to ... just about to include a secondary link to your tutorial stuffnstuff ... and that's when my microwave dinged and dinner was done. Was good too. Uhm, your tutorial that is. ;o)
And since we are talking about this ... if you were to include some actual suggested numbers for render settings, I think you would have absolutely gotten in on my post before the other that I suggested and before my nuker went off.
-Nigel