hi,
1.you have to apply for your credentials thru FCCPT or ICD the credentialing boards in US
2.Apply type 1 evaluation.You require TOEFL ibt scores without which FCCPT wont start your evaluation.Total score 89..speaking 26..this is mandatory
3. Apply for NPTE bfr going to US..
4.You have to apply separetely to FSBT www.fsbpt.org for details
5.Timing how long it takes can never be predicted....

Hey the details I knew i could answer....
keep surfing the websites you will get all info.....