To the best of my knowledge, we are not upgrading anytime soon to Word 2007, and Microsoft Vista. There are a bunch of reasons for this, good ones, but since I don't want to hear from the Church of Kill Bill about it, let's not go there.
The problem is that documents native to Word 2007 are not backward compatible...I can't read them in Word 2003, without a translator that I don't guarantee I will have.
Even though Microsoft has issued a non-compliant version of RTF (doesn't conform to the open document format standard Microsoft helped develop), experimentation appears to show that RTF documents produced in Word 2007 can be read by previous versions of Word.
So, if you're sending me something, and you wrote it in Word 2007, kindly convert it to RTF format, and then send it.
We do sincerely appreciate it.