Everyone has touched base on the major points.

No seals on the lines themselves

You need a 8mm and 6mm allen for the motor mount - you might consider replacing it - you're going to have to completely remove it and the shock.

7mm wrench to act as a counterhold on the engine mount shock to undo the nuts on the shock (all 10mm socket). A ratcheting wrench is nice for this job.

The line is a 27mm wrench on both ends... and I think the counterhold on the fitting on the oil canister was a 22mm. If you can find a thin wrench for the counterhold (to prevent the fitting on the cannister from spinning) that would help (look for my post on oil lines). A normal size open end wrench can't be squeezed in on the fitting (you'll hit the cantister or the 27mm nut on the line because the grip area on the fitting is so thin - go take a look at your car and this comment will make immediate sense).

The brackets holding the lines are 10mm socket.

Removing the lines is quicker if you just cut the rubber ends off. Replace both lines - you don't want to do this job twice!

Getting the lines in the position is a PITA - try from both the top and bottom and spin, and twist every which way.

__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net