We have created our first donation form with "dynamic fields" which become visible only upon user making a specific prior to revealing pertinent fields:

*Note you may have an error list as this is a test page -

http://coventryplantation.memberlodge.org/Donation-test

See these screenshots for more details...

http://coventryplantation.memberlodge.org/resources/step1.png

http://coventryplantation.memberlodge.org/resources/Step2.png

http://coventryplantation.memberlodge.org/resources/Step3.png