wifi defaulting to ad hoc

[minty33]

ok i got a new build and want to put mint14 on the second hard drive because of the ram is over 4gb i'm using 64bit. i use mint13 on my laptop all the time no issues 32bit. the issue i'm having is wireless connectivity with the live dvd. i don't want to run the install without this connectivity solved. i can connect to my wireless network so it seems but i have no internet access. other devices are currently connected and i verified they have internet access. so i determined it was just this box(which btw has internet access on my windows install on diff hard drive in same box). after that i ran iwconfig and noticed it's connecting in adhoc mode. can any one guess why its connecting in adhoc when my router is in infrastructure and working for all other devices in the house. how can i fix this so i can install this OS. a why this is happening would be nice so i know if i should worry about the install