Hi Anspinc,
Im a little confused by your question ,but when we went last year ,this we found to be very easy .
Apply for Vietnam visa on arrival - 100% online application: instead of coming to the Embassy as before to get Vietnam visa, you just stay at home, click apply Vietnam visa online to make visa application, make online payment, receive the visa pre-approved letter online, fly to Vietnam and get their Vietnam visa stamped at arrival airport.You pay the visa fee on arrival in US dollars.
Hope this helps