The setting is 1 to 9 and you absolutely should not have 'em set on the lowest number. That's like having almost no shock absorbtion at all. I don't know why the first two days were okay, but go crank 'em up to 7 or 8 right away. That should give you a real nice ride.
The squeaks could be caused by the springs and other suspension components taking such a hit with every bump, with there being very little shock absorbing happening. If your VX didn't squeak with the stock shocks, then it shouldn't squeak with the Rancho's cranked up to a reasonable number.
I've been drivin' on the those shocks for 96,000 miles set on 7 or 8 and I love 'em. My third set of Rancho 9000X shocks will go on in about a month.
If you have 18" wheels with the stock size tires you can improve your ride even more by getting 16" wheels with 245/70R16 tires. That way you'll have the same diameter tire so your speedo and odo will be correct, but you'll also have a lot more rubber on the sidewalls between you and the road. Very comfy indeed!
Mark Griffin