Please please follow this advice: if you inadvertantly bust airspace, don't admit it on any frequency...they're recorded! I just had a guy bust our Class D before he talked to me in approach and when I advised him of his bust he acknowledged it and said it wouldn't happen again. A simple "roger" would do...it doesn't put blame. Dealing w/ the FAA/paperwork/tape transcripts aren't fun. Had to vent and hopefully help save everyone from a mistake. It really sucks when I have to do that