for B) almost all brokerages offer this, but for most of them you have to call them to enable it ( I did at TDW, anyways)
I'm not a trader, so I don't know about (a).What I need is actually that + one other feature...this here is what I need:
a) If-then commands.
ex: buy stock xyz @ $0.10, if buy order fills, then sell for $0.105. I have Interactive Brokers which offers this, but they don't offer b).
b) the ability to buy the stock without having the money in your account, only being required to deposit it by the settlement date.
I think most discount brokers offer this...am I correct in this assumption? I have Credential Direct which offers this, but they don't offer a).