PTPaQ,
I'm not a cap guru, but I did do my share of research to defend a position to a (now banned) poster last summer. (If someone else finds a mistake, please feel free to correct me here)
A copy of the unofficial salary cap numbers may be found here:
http://members.cox.net/cappage/2006cap.htm
Ahmad Carroll is still listed as #15, since the site hasn't been updated today. As you can see, as of right now, Carroll counts $1,410,500 towards this year's cap number. That's set and done, nothing we can do about it. The important part of the page that concerns us right now is the figure on the far right, the remaining PRSB, or pro-rated signing bonus. This is the so-called "guaranteed money", and Carroll MUST be paid another $1,625,000 by the Packers over the next two years. Odds on the cap number will be probably around $500,000 next year and the remainder in the following year.
Here's the kicker, though. Since we're after June 1, we CAN charge Carroll's cap to next year. That doesn't mean we HAVE to. We're currently a little over $8,000,000 under the cap. We can still use this to sign Carroll's replacement, extend the contract of a player or two *cough*Ahman Green*cough* OR, if we so choose, use it to pay off a portion or all of Carroll's $1.625 million THIS YEAR.
Hope that clarifies things