You can remedy the right-click issue by installing this.
For the delete, you can remap a key using the 'remapkey' tool in the w2k3 resource kit (it installs fine onto XP).

For slipstreaming, I highly recommend nLite. Free, easy, and very slick. Integrate service packs and hotfixes, plus tweak settings. You can make your XP install unattended, too.