clarinet embrouchure(?) tips

ok got myself a clarinet - always wanted one - it works just fine.
having trouble discerning the difference between happily tootling away and the SQUEAK / squawk - don't feel any difference in my lips.
bottom lip is rolled over bottom teeth - slight grip of lips on mouthpiece / reed (moistened) - clarinet @ 45 degrees,
top of reed mouth piece held in mouth at the end of boottm lip rolled in over bottom teeth.
reed fastened to mouthpiece 1mm to 1/2 a mm short of the edge of the mouthpiece.
can anyone tell me what i'm doing wrong?
thanks

http://www.youtube.com/results?search_query=clarinet+embouchure&search_type=&aq=0&oq=clarinet+emb

maybe helpful?

goddamit where is my initiative? - Thank You Jordan !

Embouchure :-)
Where are you blowing from? It may not be an embouchure problem - it shouldn't feel like you're blowing from your throat, but from your abdomen, your diaphragm. Also, try widening your lips - like smiling - this should tighten up your embouchure without introducing any tension into the equation!

My friend has lent me his clarinet to try out. He bought it secondhand on a whim and found it too hard to play. I was quite surprised I was able to take to it fairly easily but I'm concerned about hygiene really. It doesn't seem very clean to use a reed someone else has used. What's the right way to clean or preferably disinfect a clarinet?