i have done my graduation in BSC(2005-2008) but have a back paper after that i did diploma in interior designing.i am interested to persuing pg in interior designing..is that possible...pls guide me what can i do

No, it is not possible. PG Diploma can be done only after a graduation. It is advisable for you to complete your graduation first. There might be some private institute who may offer you these type course but it has no academic and professional value If you want you can do B.Sc. interior designing f