DELL Bluetooth keyboard and mouse don't work

When I boot up my Ubuntu 8.04 (64-bit) to install it, my keyboard and mouse die, this combo came with the computer (Dell Dimension XPS 710), and I like having wireless devices, but it seems that Ubuntu is not fully compatible with these ones, however SUSE does, but I like Ubuntu better.

Is there any way of making them work, and avoid me spending money on another combo that works with Ubuntu.