(a) Compliance with Judiciary Law. Disbarred, suspended or resigned attorneys-at-law shall comply fully and completely with the letter and spirit of sections 478, 479, 484 and 486 of the Judiciary Law relating to practicing as attorneys-at-law without being admitted and registered, and soliciting of business on behalf of an attorney-at-law and the practice of law by an attorney who has been disbarred, suspended or convicted of a felony. (b) Compensation. A disbarred, suspended or resigned attorney