Sure you can move the spell gems.. It's actually quite easy:
1. Right click the gem window and a popup menu will appear
2. Click Lock
3. Move Gems
4. Repeat 1 and 2 to relock it
For a spell gem window with names there are quite a few available for download that you can copy to your oldschool folder and use:
Mafoo's:
http://www.eqinterface.com/sdownloa...info.php?id=114
Chronwaas':
http://www.eqinterface.com/sdownloa...nfo.php?id=1059
http://www.eqinterface.com/sdownloa...nfo.php?id=1058
Plus many others here in the spellgems download section:
http://www.eqinterface.com/sdownload/index.php?catid=19
But, If you choose another one from there make sure it doesn't contain a EQUI_Animations.xml or it will mess up the skin.. The 3 I listed don't contain a EQUI_Animations.xml
Moving the buffs window around is a little tougher but they can be put anywhere too.. To do that:
1. Type /loadskin default 1
2. Unlock the window by right clicking the titlebar
3. Move and/or shape.
4. Relock the window
5. Reload oldschool skin by typing /loadskin oldschool_purple 1 (for the purple one) or /loadskin oldschool_grey 1 (for the grey one)