There is alot of good software, Wizetrade is not one of them. I have looked at topgunsoftware, and Linsoft Investor RT. You will do much better with these 2 IMO and you can go month to month. I don't work for them and I haven't used them. I simply do a fair amount of research on both and asked knowledgable ppl. Good luck.
Check Bolter's Thread about MD market delta, it's a good method as well.