With my old software turning things b/w or septa was easy but how do I do it with the stock software that came with my d3100?

Everyones input is wonderful and its verry apperachated. You guys and gals "rock" and I have so many ways to look at my lens issue now.... Im already wanting a 200 or 300mm but honestly would have never thought about useing them for portrait work...Ive learned more on here in a day than some groups in a month

Im saying id like to stay around 300 if possable

Any recomendations? Dosent have to be the newest out as long as it works well with my d3100

Ben shooting for a while and just got a Nikon d3100, while not at the top of the food chain its a great move up. Most of what I do is portraits and I can deside between a 50mm and a 85mm... After lots of reading and research Im leaning toward the 50mm. One note I love sharp subject and a nicely blured back ground exspecialy when shooting out doors