How can I paste statistical data to a phpBB formatted web site?

I am responsible for keeping pilot stats for an "Aces High" Squadron. Our Squad web site is a phpBB format. I have attempted to utilize MS Notepad and Wordpad to arrange the data and then copy and paste it as a "posting" on our site. The data pastes just fine and my format remains unaffected when I view a "Post Preview", however, when I actually post the material, all the data points ( arranged in columns with headings) and headings are compressed (for lack of a better term) towards the left margin. In an effort to correct this, I have filled the spaces between headings and the following data with hyphens (ie: Pilot------data point(dp)--------dp---------dp). This scheme has worked, but the names of our participants are of various lengths and include upper and lower case letters as well as numbers. The net result is that when I "hyphen my way over" to a data point I'm perhaps 1/2 a hyphen off from the previous pilot's entry and my columns end up quite wavy on the verticle axis --HELP!