Christians, could you prove that God exists?

If you give me solid evidences that God exists, I will gladly convert. If you do that, that's two birds with one stone. Prove the truth of your God and prove the validity of your religion.
Update: About prophesies: What makes them any more valid than other religions' prophecies? Islam has some similar ones too, you know.
Update 2: A few more things to tell you:

I didn't say this, but I used to be a Christian. I prayed to God a lot, but he didn't answer my prayers and didn't tell me that he existed.

And it's up to you Christians to prove that God exists, not for me to disprove his existence.
Update 3: And no quoting "the fool said to his heart: there is no god." Every theistic religion thinks this.
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