The dv2315nr ships with a broadcom wireless card.
If you look in /var/log/messages and see something like "bcm43xx: Error: Microcode "bcm43xx_microcode5.fw" not available or load failed." then your card will need a firmware update.
http://linuxwireless.org/en/users/Drivers/b43#firmware decribes the procedure needed to update the firmware on the card since the firmware is proprietary and cannot be included with a Linux distribution.
I personally prefer OpenSUSE (ver 10.3 or 11) and Ubuntu 8.04. Both distros have documentation specifically regarding BCM43XX installation in their online documentation.
Hope this helps.
Matt