IRA and 2010 Roth IRA conversion

[Osprey]

I make too much to qualify for a Roth IRA or tax deductible regular IRA contributions. I still want to open an regular IRA for the tax shielded growth that they offer. I am maxing my 401K at work.

I have a couple of questions about the 2010 supposed Roth IRA conversion possibility-

1) Is it worth converting to a Roth?

2) If I can't deduct my contributions to the regular IRA on my taxes, what will I pay taxes on if I convert to Roth in 2010, just the growth, interest and capital gains?

3) Can I roll my 401K into the Roth in 2010?