Well I've never adopted myself, but I can tell you there there are generous tax credits out there for people who've adopted. I'm not sure what the 2011 credit is, but for 2010 the max credit was $13,170 per child. It's a refundable credit too, so you don't have to owe tax to get the money. My husband, Rich, can give you some more information on this....he's a tax accountant. You can call him at ###-###-#### with questions on claiming the credit.
Oh yeah, you might want to look into employer assistance and potential grants too. And, I believe that there is a tax exclusion for employer assistance, so you don't have to pick a portion of that up as taxable income....that is if your employer will offer the assistance.
Hope that helps! Good luck!