keep getting libvorbisfile.dll,and have re-installed lots of times...help?it is in the fallout new vegas folder in steam

The libvorbisfile.dll file is part of the base game so if I'm understanding your problem you've either installed the GECK in the wrong location and it can't find this file or this is a UAC issue with where you've installed FNV itself and the GECK can't open this file that it requires to run.

this the location: C:\Program Files\Steam\SteamApps\common\fallout new vegas
is this the wrong location?
note~i found the file,its in the fallout new vegas folder so what is wrong?
edit~moved the files into folder,is working ok now...:touchwood:
edit 2~NOOOOOOOOOOO!now it starts up,but then doesn't respond!

It's very, very, very, very slow to load and I've got a quad core with 4 megs and a good vid card. It also gives the message that it has stopped responding but it is only choking on Default.esp. Give it time.