If you are asked to setup a credit card you do the following:
goto Apple - My Apple ID
goto Apple - My Apple ID
* Change your email address to a valid dummy address ie: dummyaccount1@company.com
* go back to Itunes Store - logout, browse to a free item and add it to your Ipad - it will ask you to create a new account or login with an existing account. Choose new account, setup the new account, verify email address and off you go.
"Do it, and then you will feel motivated to do it"
~Zig Ziglar