Hello Jang,
You should be able to view .svl files on the surface models just like you view regular AFNI datasets. SUMA's documentation ( [
afni.nimh.nih.gov] ) will guide you through the process. I suggest you take the "Test Drive" with the demo data provided before you use you own.
You might also want to read the section titled: AFNI to SUMA Communication in SUMA's documentation.
-ziad