If you don't see the five icons and selections Tom S. describes (specifically there are only four and the "Subscribe" one is missing), then you are likely subscribed to the entire forum. Here is a thread where this was discussed before.
http://www.montanaowners.com/forums/showthread.php?t=34777&SearchTerms=subscribe,topic s
The solution takes one of two alternatives.
#1. Click on the "All Forums" folder (upper left of page) to get to the first page of the forum. If you have just logged on, you should be there already. There should be icon and line of text on the upper right (below the Login/logout icon and your MOC ID) that says "
Subscribe to this
board". At least is should say "Subscribe...". I suspect it says "
Unsubscribe....." and that is your problem. If you are "subscribed" to the entire board (forum), then you won't see the option to "subscribe" to an individual topic. Click on "Unsubscribe..." and then you will be good to go.
#2 If none of this helps, remember how much you paid for the advice
and PM RVWheels for assistance. If anyone can cure what ails you, s(he) can.