I bought my blackberry 9000 bold since three days i figured out that i don't have on it word to go or any other application to open my files on excel word or pdf.
I contacted the seller he said i have to buy it
i ask some of my friends that have the same phone they said it suppose to be included in the options.
how to download this application to enable me open and edit my excel word and pdf documents.

Wirelessly posted

It should come with all the new OS upgrades.
Having said that, it's odd that you didn't get it pre-installed with your Bold.
If you mean your seller is a private user, then probably he deleted it before selling you it. Install any OS, and it will come up in the install options.