VBA Loop Range and Insert Values in New Column

I'm brand new to the forum. Normally, I can check the sites and find what I am looking for and haven't had to register... until now.
Some background to my problem:

I built a Microsoft Access database for my church to track member information. I was able to import a lot of the needed information to create the records for each individual and household easily. What I can't do is import their offering donations until it is "Normalized." Which means that I need each row to be 1 record with the fields listed as the column headings. My church has a spreadsheet with several sheets one of which is named Input. I've attached the desensitized file for you to view/play with.

What I need to do is loop through the input sheet and find all the values in range B:4 to GN:387 that are greater than zero or not null (I believe they entered the default as zero so their other calculations would work). Then I need those values to be transferred to the column labeled Offering Amount on the ImporttoAccess sheet. Somehow I also need to define three variables associated with the cell that is contains a value greater than zero.
1. I need the row heading value for the envelope number (Column A of input sheet) which intersects with the amount
2. I need the column heading value (3 field merged) for the date (Row 1 of input sheet) which intersects with the amount
3. I need the column heading value (labeled: GenFund, WLA, or Missions) for the designation of the offering (Row 2 of input sheet) which intersects with the amount

Each of these I need to attach to the value offering amount and insert into their corresponding column fields for that record. I have entered 2 example rows of data into the ImporttoAccess sheet for you to see what I am after. I am sure it's possible since the data is there, But I have no idea how to go about it.

Thanks.