The newsgroup is the preferred method of participation. It allows you to participate at your leisure in dealing with the high volume of messages daily.
Using a supported newsreader (such as Forte's Agent or Microsoft's Outlook Express) you would only download the subjects of the new messages each day. You can then mark those you choose to read for full download. This has the advantage over other forms of access since you only retrieve the messages that interest you.
Depending on how your computer is set up, you may be able to just click on the following link to access the VROC server:
While you can read the messages in the Discussion Groups without logging in, in order to post, you must have a valid VROC number.
The Using The Site area of the FAQ has information on how to set up the more popular newsgroup readers.