I did this in my 93 eclipse. Don't know how many miles I went like that but it was inbetween a 1,000 mile trek.
I went to pepboys. IT was really hard to turn (I didn't have P/S anyway but it was even harder) and yes I did have a bad metal on metal sound. They said that I got there just in time. The grease was frying b/c it was so low in there.
They just replaced the boot (40 bucks) and filled it with grease. Didn't tear up for the remainder of the life of the car (which wasn't that long... damn that sucked...
) I loved that car man....