I am in need of a help from ca

Hi, i am in need of a CA, because i am looking to open a e-commerce website, it is similar to www.elance.com, i would like to open it myself (Soleproperitry ship), so far, i have contact with bank to open a current account, so they advise me to get the documents, and they left, so here i would like to know what are the documents required to open a similar freelance website? and also there is any government registration needed for that? i am new to get in to business, so i need a good advise and support initially from professional CA's , hopefully i will get a reply about my concern soon, 

Thanks