Subscribe form with multiple checkboxes

Hello everyone, we've been using CM for almost a year now and we are loving it.

I currently have 2 lists and I'd like to create an HTML subscribe form on my site that lets a visitor enter their e-mail address and use checkboxes to submit a subscription, like this:

The problem I am having now is that the subscribe form code that gets generate for each list has a form that is coded for one list or the other. Is there a way to allow the user to select either/both lists?

[edit...sorry the image was broken...I fixed it (hopefully)]

[looks like image is broken if you are not logged in...go here to see it: ]

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