Pakistan has not "conquered" it's Western frontiers not because of it's inability,but it simply has ignored the area & just used it's strategic value.
PS-did you know that if the most popular leaders in the NWFP,Khan abdul Gaffar KHan & Khan Sahib,didn't boycott the British held referndum in 1946
.........the NWFP would have opted for union with India & not Pakistan.
I've learned a lot about Pak/Indian relations and history here at FR, but not nearly enough to feel confident that I understand it.
I pay attention to these threads, because they're both involved in the WOT and both are nuclear powers.
But I probably weigh in more than I should, because I'm looking at it from a "today" perspective, not one with an in-depth grasp of the real history of the region.