Hi,
If you want to conduct biz at home, u need to apply to HDB for approval. I think the fee $20 and can pay online using a Credit card.
As for website registration, if you are into e-biz, there are many companies doing the full packages for you, webiste set up, web address, e-cert, shopping cart..... compare prices and get a reliable one...
As for partnership... well, entrepreneurship is all about passion ... not everyone's cup of tea...
Jus my 2ct.