Moving harddisk to other system. How to "activate" different HD/chipset driver ?

When installing SuSE 9.3 on a system that has an ALI15x chipset, and then moving the harddisk to another system, that uses a via chipset, it will not boot (can't find the harddisk). The correct driver is present in SuSE 9.3, as I can boot from the SuSE cd/dvd. How do I make it load the via chipset module/driver, and not just give up because the ali chipset is no longer present. Thanks in advance Bo