Hi Barbie,
First, I must inform you that I am moving this thread into the "Help Using the Discussion Board" forum because that's where it belongs; i.e., this isn't an ostomy question. Now, to address your questions:
GMT refers to "Greenwich Mean Time" which is an old name for what's now properly called Universal Time (UT), see
http://aa.usno.navy.mil/faq/docs/UT.html which is basically standard time on the 0° line of longitude which passes through Greenwich, England. Times in any time zone are specified relative to GMT. This discussion board tries to display times in your own local time (when you're logged in), but in order to do that, you must specify your time zone in your profile. For example, U.S. Eastern Standard Time is GMT - 5 hours (i.e., 5 hours earlier than GMT), while Pacific Standard Time is GMT - 8 hours. During the summer, due to daylight savings time, local time on the U.S. East Coast is actually GMT - 4 hours and on the West Coast GMT - 7 hours. Assuming you live in an area that observes daylight savings time, you'd have to change the time zone setting in your profile twice a year in order to always display correct local times (our board software can't do that automatically because it doesn't know whether you live someplace that observes daylight savings time). See
http://www.uoaa.org/forum/viewtopic.php?t=260
An
Avatar is the little picture that you see displayed beneath some people's names in their postings. If you have a suitable image file, you can upload it using your Profile settings. For advice on preparing such an image file, see our discussion thread at
http://www.uoaa.org/forum/viewtopic.php?t=158
subSilver is the default "style" or "skin" provided with this discussion board software. This determines the general appearance of everything on the board: color scheme, text sizes & styles, etc. Some discussion boards provide many alternative styles. I haven't done that because I've found that doing so can interfere with installing security upgrades when the software is updated. I do, however, provide two minor variations on the subSilver theme, namely, "biggerText" which is the same as subSilver but with bigger text, and "bignBold" which makes the text bigger and also puts it in boldface. See
http://www.uoaa.org/forum/viewtopic.php?t=257