Ahem. I'll clear up the misunderstandings in this thread...
1) If you are convicted of any criminal offense in Texas, you CANNOT get your records expunged or sealed. It is prohibited by the Code of Criminal Procedure. This includes Class "C" misdemeanor offenses like MIP/MIC. A conviction for ANY criminal offense is on your record for life in Texas, unless the Governor grants you a pardon.
2) If you received deferred adjudication for the MIP, then it means it was dismissed with no conviction being placed on your record. However, your arrest record still exists, and the court file will still exist. No conviction will show up on a background check, but the arrest may show up. The ONLY way to get rid of the arrest record and the court records is to file a Petition for Expunction with the District Court in the county where the offense was received, and only after the statute of limitations has run (in other words, 2 years after the charge was dismissed). There are certain technical requirements associated with such a petition, so you are best served by hiring an attorney to do it for you.
3) Again, just because the charge was "dismissed" after you completed deferred adjudication does NOT mean all the records were "erased" for you. The records all still exist and can be easily found. Only an Order of Expunction will allow the destruction of the records.
4) Just admit to being charged with the MIP. They won't care. If you try to cover it up and they find out, you will be far, far, far worse off.