I am a citizen of Armenia. Can I apply for your on-line service of getting my Vietnam visa? What procedure will I need to pass through?
You can apply for an approval letter online to pick up the visa upon arrival on your US passport.
All you need to do is to submit an online form + pay for the service fee and wait for 2-3 days for the approval letter to be sent to your email address. Please check out the FAQs section for further information: http://www.myvietnamvisa.com/faqs.html
I am traveling to Vietnam in April 2012 - When should I apply for Visa online
You can apply for a visa 6 months in advance, so October will be the best time to apply when you have your Vietnam trip planned.
Have a good day.