Uploading list of GPS points (and info) that aren't in appropriate format.

I have kept a list of GPS points (southings/eastings/name/date) from my old handheld gps unit (I don't have the cables to connect it to my computer for download) and want to be able to convert that data into a file that can be uploaded onto my new Garmin Echomap.

I can't find the required format anywhere or how to manage this process.

Any help would be much appreciated.