How you handle it, depends on how you transferred the money. If it was a custodian to custodian transfer, then you will have a Code G. All you need to do is enter the 1099-R exactly as it is.
If you withdrew the money and then redeposited it in a retirement account such as another 401k or IRA within 60 days, then you will have a couple of extra steps. You will need to note this in the interview. Simply tell the program what you did when you arrive at that screen.