Boot.ini Problem

[sxymxd84]

i can locate my boot.ini file just fine or bring up the text part of it i should say. when i go to add the /3GB or just save it at all. it will not allow me to save it. it always says QUOTE please check to make sure that the path and filename is correct. anyone know what its doing this? heres what my boot.ini looks like. [boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /NoExecute=OptIn

[MentaL]

[hernanpato]

change "only read" in properties menu u can locate it in c:boot.ini if u cant see im just check on tools---> options---->Show ----> show sistems files ... check this on ... GL