rhondar - have you imported an ASUS certificate into your vista home premium and then have you changed your cdkey to an ASUS home premium cd key? I'm pretty sure that bios mod will work fine. You can check with everest to see if the slic is in the bios now you've flashed. Download the free everest and click on mainboard, then acpi and then RSDT: Root System Description Table and look for Oem ID and OEM Table ID, these should say _ASUS_ and Notebook, you should also have a SLIC: Software Licensing Description Table which also says _ASUS_ and Notebook.
have you added an asus certificate? did you use an asus oem key? did you check in everest to see if slic is there? if slic isn't there in everest or is partial i'll remod for you