facing difficuly to configure authorise.net

facing difficuly to configure authorise.net test account.
i got these info by signing up for test account on authorise.net site

Login ID for Authorize.net
Transaction key for Authorize.net

But thete is no payment method shown on front side.
paypal test account works fine.

kindly help me

And what is your currency ? Authorize.net only supports USD so if you are in another currency, it won't display even if it's configured correctly.

thanx