Dear Travelmate,
Congrates,
If you a Karachite and never been to Murree, then go there, coz murree has lost appeal for experienced travelers, for a newbie its still interesting.
1-Go by plane to ISL, spend a day there visiting
2-Go by private cab to Murree, spend a couple of days visiting chairlift and tramping at Mall/ post office road.
(I've been there and beleive me for a couple these places only provide a background, its only ....... that is cherished.)
3-Must go to Nathia gali its secluded and peace ful.
4-You may visit other areas of Galiyat or may opt for Kashmir for a day or two.
Hope this helps...
3-