If my memory serves me right it is not possible to use this card to inject at the moment, however I do believe that you should be able to get it into monitor mode using the drivers supplied at the following location:
http://intellinuxwireless.org/?p=iwlwifi
A working iwlwifi driver are included in kernel versions 2.6.24 and up, so you might have to either upgrade the kernel or install the drivers from the previously mentioned site, using the current kernel, if possible. As a kernel upgrade is nothing that you will want to attempt unless you are very familiar with linux and sure about what you are doing I would simply advice you to get a supported wireless card. There are several both cheap and powerful cards mentioned on the forum already.



