Capturing multiple HLOOKUP results in an array

I was provided previously with the code for a VLOOKUPS function for a project of mine by JBeaucaire. It can be found here, in the returned file he provided to me: VLOOKUPS multiple results in a drop down list

The set up works wonderfully. But now I'm trying to accomplish something that is just a little bit different. I'm trying to to populate an array with all the results returned from an HLOOKUP formula. I was wondering if anybody had any code written that might create an HLOOKUPS function. I've tried to tweak the code provided for the VLOOKUPS function by JBeaucaire but I'm a novice, novice programmer and can only pull off simple functions and procedures.