I have had no end of hell with this website - it's not been tested at all or so it seems.
I bought an Acer laptop and have then tried to register to upgrade from MCE to Vista Premium Home (or whatever it is!)
First, I used my COA and it seemed OK...but then the site wigged out and I had to try again. Upon having another pop it failed saying that the COA had already been used. Or words to that effect.
So...off goes and email to the Moduslink people...
About a week later, I get reply saying that the problem with the site had been fixed and 'duplicate' COA's had been reset. Woohoo...
I tried again and this time managed to get further...I could get to the point where I could actually pay for the upgrade...it failed.
A few days later, I could get to the same point...it failed.
Now - I can get as far as entering in my COA (which at least doesn't fail any longer) won't go past the next stage. I'm stuck at "Unrecoverable Error. Please Try Again Later." - not the most helpful message known to man!
So...another email has been fired off to Moduslink. Shoddy work at best, I'd say.
Aside, if anyone with a new Acer machine has managed to do this successfully, please get in touch with me!