Originally Posted by whysoserious
Agreed, if hes not going to help, why comment...
Because he has a point. If you are not able to install Backtrack without help then most likely you are also not able to use it properly for its intended use-case.
But anyways, Creating more partitions for installing Linux on it will not help as long as there are still four primary partitions. You still won't get the dual boot option. This is by the way not a Linux limitation, but a MS-DOS limitation. The workaround is to delete a partition and let the installer create an extended partition in the space, so that it can add two more partitions (swap and /) when installing.