General :: CD / DVD Disk Won't Mount When I Am Only A User - Fix This?

I am truly sorry if this has already been answered, but I don't think the question was asked in EXACTLY THE SAME WAY, maybe?

I installed Slackware 13.37 on my Dell desktop pc (I don't think that the model information is relevant in this case...), and I was able to insert CD's and DVD's which would then be mounted AUTOMATICALLY so that I could then browse the contents etc. I can STILL do this, whether or not I am logged-in as "root" or as a "normal" user...

Now here is my problem : I JUST installed Slackware 13.37 on my Toshiba notebook (a Satellite 210, in this case) TODAY. Now, I can insert the same CD's / DVD's into the drive and have them automount as the "root" user, but when I log in as a simple user, I get errors telling me that they can NOT BE MOUNTED! The messages on quite long and complex, but I can paste an copy into a secondary post if that will help. For my part, what the error message says is a lot of gibberish!

I have examined the user information on both my desktop AND laptop computers to see if there were any major differences, and there are NONE EXCEPT FOR ONE : My "user" account on my desktop is user # 1000, while on my notebook it is 100. The DEFAULT offered in both cases was 1000 when I created the accounts, but I did not see
why the next user in the list should be over 999 higher than the last one listed, so on the notebook I did not accept the default offered, and instead choose to use # 100. Was that wrong? Why does Slackware start the first created user at such a large user number?

I did NOT do anything to allow the automount of optical disks as a user on my desktop pc (at least, not to my knowledge...) that I have not done on the notebook!