[How do I get my real name unseen]

  I would like it so that my real name goes unseen by others.  How do I achieve this?  Any and all help would b appreciated !!  Thank u very much!!

[You can't drop mesh attachments. Detach to inventory and rez in world. What do I do?]

        When I try to open for ex.(" Dirty Princess" Raunchy Princess Outfit w/shoes) in the right hand corner of my screen I get the message "You can't drop mesh attachments.  Detach to inventory and rez in world.  I am quite new to SL and I really have no idea what this means.  Also at the risk of asking to many questions at one time I also get another message totally unrelated something like "not enough space to many prims".  Please don't quote me on that but I'm sure someone out there knows what I mean.  I don't know what to do then either.  How do I get more space or more prims?       This all occurs while I'm in my home.  I am a resident.