I am not sure if the Bios on your machine supports PAL. You need to open
the Bios (F2 if memory serves me) and check for the presence of such
setting (this is assuming you use the standard video board).
I suggest too, visiting Sony's site http://www.iq.sony.com/srvs/sosdocs/default.asp?src=sonysupport
Finally, many TV sold in Europe support reading NTSC.