Before I gave up on it, I would make sure that you had the correct driver installed from synaptic so that it could or would load the correct drivers.
Also, when you go into XFdrake, you can always load the vesa drivers which will enable you to use the install. I would try this to make sure that it at least worked. Then if it loads, do a synaptic search for your current onboard video card to make sure that the driver is installed. It probably is already installed, but I would check.
Desktop: AMD 3.6ghz X4, Gigabyte MB, 8GB ram, Multiple PCLOS's, 18.104.22.168-pclos3.pae.bfs
Server: Intel 3.4ghz X2, 4GB RAM, SATA, gnome2, *.pae.bfs, Headless, Servers: LAMP, FTP, Samba, Print, PXE, BT
HTPC: Phenom II X4 2.8ghz, 4GB Ram, 1TB SATA, PCLinuxOS-KDE, NVIDIA N220GT HDMI, *.pae.bfs