The X-ray machine will not harm your computer although some travelers prefer to carry their CDs around the X-ray and hand to the guard for review.

Carry your computer separately from your luggage so that you can easily present it to airport security.

Expect to be stopped at the airport by security. You may be asked to power up your computer to ensure that it is not a security threat. Make sure the computer has enough battery charge to do this multiple times.

Keep your eye on the portable computer while on the belt lest someone picks it up in error or intended theft.

If you plan to work on the plane, you will not be allowed to power up until the airplane is at cruising altitude. You will also need to turn off during the airplane descent.

Check to see if your laptop has an international power supply so that you can plug in to various outlets. Bring adapters for the different countries you will visit.

Most business travelers suggest carrying at least two batteries with you for back up and to upgrade your batteries whenever possible to longer life batteries.

Check with your international hotel in advance to find out if your room will has internet access.

Make sure you pack all necessary items to create an international connection such as a small screwdriver, adaptor jacks, security password cards etc.

If you work for a large firm, you should confirm in advance all necessary phone numbers and make any necessary changes before you leave. Print out phone numbers for multiple cities and locations that you might possibly be in.

If you work for a small firm, or you own your own firm call your ISP (internet service provider) before you go and make sure they have international connections and phone numbers where you are traveling. Some do not.

Make sure you test your connection before you go.