I'm needing help with my website and I cannot fix it. I guess that the solution is not so simple, so I wouldn't receive a good answer.
So can I post a question offering money to who fix it?
Good Question. The answer is no, but you can visit careers.stackoverflow.com and hire somebody.
If you can't afford that, you can browse the profiles of people that are good in the tags relevant to your website and see whether or not they have contact information in their profile. Most do not, but some do.
Answer is no. If this is your requirement, you should try oDesk or matchist, and hire a freelance developer.
Then when there comes a point that you have doubt about some of the code or design done by your contractor, go ask here in SO.