Harvard fee payment: Before submitting anything?

<p>I need to see if the credit card I have works for paying harvard's fee (it didn't work for stanford's) as soon as possible.</p>

<p>From what I've gathered, I don't need to submit anything from the common app to reach the payment page. Can I pay now and submit stuff later? I need to know soon b.c. tomorrow the person who'd lend me a different credit card is going to london and I'll be screwed if Harvard for some reason can't accept my credit card.</p>

<p>Please answer only if you applied to Harvard as well and know what I'm talking about.</p>

<p>Thanks.</p>