So if understand this right and i want to invest with BTC:
1. i create a bitcoin wallet on counterwallet for example
2. i link that bitcoin adress to my personal NVO crowdsale page
3. i send my btc's to 3AiGej11G8jUXvEBPvQKPLiHXC7ruUCp1Z
remember to write down the private key of the counterwallet and store it away