If you want to get money out of Scottrade then what you should do is fill out a wire transfer form (have your brother fill out a form providing account number and signature with it)... If the funds are available (ie, funds available without selling stocks) then they will wire transfer you the money in the account number provided.

If you have to sell stock first then you should login to scottrade and sell the stock then have them wire transfer it by filling out the same form....

It's not that hard..