If you can, put an autoforward on your home Email account so your messages will be forwarded to your in-country address. If you are working in Vietnam, you should note that the Intranets are getting to be good sources of news and information about who's who within Vietnam. This contact information can be difficult to dig up otherwise, and English language print magazines cost a fortune. Most of the Intranets have English versions. Travelers should be aware of the effect of heat and humidity on computers.
Laptops heat up.
You'll want to take a small fan along with you to keep air flowing over it, or jack the laptop up to get some airflow. Also, the keyboards often stick and mouses gum up. It may be a good idea to bring along some canned air. Everyone I traveled with to Vietnam who brought a laptop had a problem at some point except me. My Micron Transport, however, did well.