Bad luck, sorry, man.
And whomever the company you had the inherited IRA with is also dumb as a box of rocks for not contacting you to set up required minimum distributions automatically. Unfortunately, you can't go back and fix it to do the RMDs now - you have to do the 5 year liquidation, so you've got 2 years (?) roughly to get the money out now and pay taxes on it. Wow, I do hope it isn't more than a few thousand... I have one that was in the 300K range, and I can't imagine how much of a mess that would have been if I'd forgotten about it.
Seriously, whomever the company was with, I'd question ever giving them any business with them again since it should have been standard for a rep to contact you and ask what you wanted to do with it once they were informed you'd inherited it.
You'll now be forced to take all of the money out, and it will count towards your income and your taxes may be insane if the amount pushes you into higher taxable brackets, and for sure you'll lose way more than if you'd done the RMDs properly. :(