When you are creating or editing a rule, doesn't the Conditions section
of the window have a scroll bar for you? It does for me, and the only
update I've applied that's supposed to affect Windows Mail is the
Vista SP1 update (not counting the updates for the spam filter).
Where the From line contains people
Where the Subject line contains specific words
Where the message body contains specific words
Where the To line contains people
Where the To line contains people
Where the CC line contains people
Where the To or CC line contains people
Where the message is marked as priority
Where the message is from the specified account
Where the message size is more than size
Where the message has an attachment
Where the message is secure
For all messages
Nothing about "Where the message is TO the specified account"
Anyway, the strangely named "Where the message is from ..." seems to work.