Problem in Demat Account

Hi,i'm a new investor to stock market.Actually, i started my demat a/c and trading a/c before some months..During that period,i registered with NSDL website(via ideas for demat account).My DP told that i can see the stocks in nsdl websites online.After 3 months, i started to invest in shares and bought some shares in 5 and 10 like quantity.Now, i want to see them in my demat account in NSDL. The problem is i could not see them since i forgot my username and password for NSDL Login.Can anybody help in this regard?