Accidently Indicated Standard Instead of Pro for OEM Backup Downlo

I Ordered a medialess OEM Office 2007 Pro License with my new computer.

The system builder did not pre-install the software on my drive but they did
send the key.

I ordered a physical OEM Backup disk, to be delivered in 30 days, for $9.45.

I requested an OEM backup download, but accdently designated Office
Standard, the default (shouldn't or can't they check the Office version by
the key rather that having to accept a user input).

When I tried to re-request a download for Office Pro I got an error (after
carefully re-checking the Key digits).

I tried downloading a trial Office 2007 Pro, but it would not accept my OEM
key.

Is there any way to "reset" my backup OEM download request for Pro instead
of Standard?

Should I go ahead and download OEM Standard, and will it recognize my Pro
key (unlike the download site) and alow me to upgrade and no extra charge?

I have sent a similar request to my system builder.
I have to ask in here because although I belive my problem was due to MS's
poorly designed download site (not checking the key, not being able reset my
choice), I have no service standing because of my OEM software

Thanks for any helop you can seggest.

Harry