When deciding to advise an attorney on weather or not an idea is patentable should you have him/her sign a NDA (is this standard procedure for them anyway?).

And what are the chances that a large law firm lawyer would work off commision...take a cut if profit is made. And how much more important is an NDA than.

This might be the wrong place to ask this question but is it possible to get investors or loans or whatever capital you have raised to start the business to pay for the lawyers.