There are a number of scholarships available for Pakistani students. Most of them cater to post-graduate courses, instead of undergraduate programs. Some popular scholarships are Fulbright (for US universities), Rhodes scholarship (for university of Oxford, UK). The detail of Fulbright scholarship is appended below.
The Fulbright scholarship is offered to students aiming to take up a graduate course in the US, either at Masters Level or doctorate (PhD) level. The scholarship offers full tuition fee, living expenses and a return air ticket for the student. This scholarship opens in February every year, and closes in mid-May. The main requirement is GRE Exam, and the students who qualify for the interview, are required to take TOEFL Exam as well. The condition attached with scholarship is that one has to return to country and serve the country for the period of time this scholarship has been availed in the US.
The application process for the Fulbright scholarship (for entry in fall 2013), began in February 2012. If you are interested in applying in this batch, it is recommended that you take the GRE as soon as possible. The application form can be downloaded from the website (Fulbright.stat.gov), and filled and submitted electronically. A hard copy of this application must be sent to the United States Educational Foundation in your Country. Make sure you obtain the official transcript from your university, and attach three LORs with your application.
Fulbright application form includes an SOP and Study Objectives; a precisely worded document outlining your main academic aims, and the exact program you want to pursue in the US, including the reasons why you wan to apply for the program. It would be helpful to add how a particular program will help you achieve your goals.
I hope above mentioned information helps you to understand the procedure of Fulbright Scholarship but If you need further assistance on this than you must visit its official site for details application form, document checklists, and submission deadline. Furthermore, get instant information about Preparation of TOEFL Exam from 'what is TOEFL test'.