I want to tune my electric guitar to an open E. I have 9 guage strings on my electric and wondered if my guitar strings will snap or something bad will happen to my guitar neck if i do this??

Should i do it or not??
probably wont depending on the quality of your guitar and what bridge you have etc.
i dont see why youd tune an electric guitar to open e though :S
there shouldn't be that much tension change between e standard and e open really, if you're strings are old there's a danger they'll snap. but there's a danger strings can go at any time...
The only 6 words that can make you a better guitarist:

Learn theory
Practice better
Practice more
it is open A (E A E A C# E)

It should not matter what gauge strings you use. If they are quality strings that is. Quality strings of the same brand (regardless of gauge) should all have the same breaking tension.
If it wasn't for bad luck, I wouldn't have no luck at all