1: Skype is gay, and I do not understand why so many people prefer it.
2: It's a simple fix, really.
3: I'll provide you a short, quick tutorial with download links. You're welcome.
1: Download this OFFICIAL 3.55 system software.
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2: Download this jailbreak from Geohot. Why Geohot? Because it's small, and it can flash on without being in recovery mode.
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Then from Geohot's firmware, you're free to do whatever you like, such as installing ANY custom firmware from the XMB. Enjoy, and you're welcome.