Which version of windows vista are you running?TL-WN725N
(Be wary of German) I know the line in question should be on this picture, if it existed. http://puu.sh/5prsT.png
I've made sure I got permissions to write to sys32, reinstalled WinPCAP, got both wpcap.dll and packet.dll in there now. "Start Hotspot" button is still grey though.
edit: is it starter or home basic?