Make the release into our hands a public spectacle. Assure that all the major networks, US and worldwide, are present. A large US contingent of diplomats, and of course, US military, should be present.
Have Bin-Laden walk from Afghani custody toward US custody. At the half-way point, have a contigent of Marines open fire, aiming especially for his head.
At the same instant, launch coordinated surgical strikes against Arafat, Qaddafi, Hussein, the PLO, Baghdad, Tehran, and other terrorist groups and nations that may have had a hand in this, or just taken pleasure in the effect.
After this, President Bush immediately appears on television, detailing our limited actions, taking responsibilty for the execution of Bin-Laden, and annnouncing that any further acts of terrorism against America will call for a more extreme response.
Second. We must take all immediate defensive measures. This largely means counterintelligence. All suspicious aliens must be interned immediately. The guilty should be deported. All terrorist fronts should be closed down ASAP.
Third. We must utterly destroy the source of terrorist activity. Palestine must be destroyed, as well as Syria. Afghanistan's Taliban should be destroyed. This is for starters.
Consider first: a formal declaration of war would only start a war with Palestine and all their allies. And you know those nutcase Muslims would use chemical/bio weapons if they went to war. And they'd try to get them to the US too (and would probably succeed due to poor US security).
Speaking of US security, I bet I could find all the info I wanted about the US military on the internet or in magazines or books. Including location of all marine, navy, army, and air bases, number and capacities of all offensive equipment (fighters, ships, tanks, artillery, missles, etc).
In fact, I started a small project 2 years ago, and I got quite a lot of information. It was scary.