Translate to a different language

One of the people I work with asked me if I have a computer and could I write a note in Vietmanese.
Seems she is having trouble getting a message across to a couple of Vietnamese workers about mixing parts.
So. Is there a site I can go to and have a simple message translated to Vietnamese?

There are English>Vietnamese and Vietnamese>English online translators linked from this page, but I would be very wary of relying on them in a situation where important instructions are given; grammar differences between the two languages could completely - even reverse - the meaning or intent of your text

Oops: link