Go to a Typing Centre and get the application typed. They will advise you about the documents needed. Take the typed application form and the relevant documents, along with the sponsor's letter to the Immigration Centre at Gharaffa. If my memory is correct it is the building no.4. Try to go at 6.30 am itself. Check up the Ramadan Timing. You should be able to get the visa in 4 or 5 days time.