Do you have a home network? If you do, you can just share the DVD on your laptop with your Mini. Although, you may not have the drivers to do that. Maybe you can get them on line if you Ethernet connection works. It has been a while since I done much in Win XP.
Since you are installing Open Office, have you considered Ubuntu 10.04 for the netbook? It comes with Open Office & I only had to install 2 items, my wireless driver (via Ethernet cable) & Adobe Flash. My wife hasn't had a problem using it. I wish she did. Every time I want to use it, she is on it.