Just a bump, 12 months later.
Now its Jan / Feb 2011, and I am also in the very same position. - Almost.
We will pass through the border in China to Ha Noi.
then we plan to train or fly down to HCMC, because its too damn cold just now in Ha Noi,

Any way, getting in HCMC, we will look to buy a small 125cc motorbike, and make our way north.
Thats until we get bum ache, or fed up and sell it and train the rest of the way.
Looking to spend 2 weeks in Vietnam.
I am guessing HCMC to Ha Noi, is too much in 2 weeks ?
Suggestions please, where to get a cheap, but relaible bike for 2up riding.
'vette