The "documents to go" and "blackberry attachement service" are both there.

Ok, now I'm more confused. Here's the deal.

I can email a Excel, Word, etc...document from my Yahoo email address to another yahoo email address which comes to my blackberry. I can open it on my blackberry. However, if I go online and into my sent folder in my yahoo account and try to open that attachment I just sent, I get the message "the item you selected cannot be displayed. Do you wish to save the item"

Thoughts???