Wow, that was all very helpful, thank you Naomi, DwWin, Go.dot and candy.
Well, I checked out the websites mentioned and I learnt quite a bit. Though quite a few pages talked about finding a rehabilitator, I don't think it is possible here. I am sure they will simply ask me let him go outside my house, just like that! so, I'll have to do something to make him a little stronger before I let him go.
I remember reading somewhere that very young animals only wee when the mother licks that area.
Naomi, that was a scary thought until I thought of my husband doing his bit.

If it is too young to wee, rum it's bum with a warm , wet towel. This is what you do with pups if mum rejects them.
Candy, that saved my husband too!

Well, I must say that it sounded a lot like a rhyming poetry...rum,bum,mum! Thanks.
Sugy