Replacement garage door opener?

We moved into a house with garage door openers in place but no openers to open them. How do I go about getting new ones that work?

Answers:
If the opener is not too old (5 yrs or less), you can buy a universal remote from Home Depot or Lowes. If it's over that, you may have to just buy a new set.

Other answers:
My husband went to Sears and bought a replacement remote, then programmed it to the opener.
My husband went to Sears and bought a replacement remote, then programmed it to the opener.
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