VBA: Convert Excel to CSV (Comma Delimited Text File)
These two articles are the best places to start if you are looking to build a custom export to convert Excel to a CSV file.
First off, If you aren’t interested in using VBA but would still like to convert excel to a CSV file, just click File->Save As-> and in the Save as Type dropdown choose *.CSV
Here is a great way in VBA to convert to CSV. This method looks a bit daunting at first, but it is actually very easy, uses some error checking, let’s you choose the delimiter and other good stuff. Just create a new sub, and “call” this code using the provided example.
For a few other options, look here: