May no longer be climbable -- boulder that held anchors is lieing at the bottom of the cliff, and I think as of 2012 one or two bolts are, also, missing hangars.
Look for a stepped rock heading up with bolts on the face. Climb the steps to the top. Anchor on tree(s). (A couple trees hanging over the top edge have slings on them -- but they looked pretty tatty when I climbed it late August 2011. I chose to anchor on trees back from the edge.)
(Book [2009] says 6 bolts, but diagram only shows 4, and I think I only saw 4 on the cliff in summer 2011.)
edit - 8-27-2012 - 98 percent of routes at La Paroie du Lac are natural anchors (ropegunner)
Climbing up the easy stepped rock to the right of "Tatanade" to a pair of bolts. Continue up the ramp left of the bolts then around right above them. (Going directly up the face where the bolts are is at least 5.10+.)
(Guide says 4 bolts, diagram shows 3 but lowest doesn't exit; only 2 are in the rock. Anchor on tree(s).)
At the base, there was a waist-height separated flake, which is now laying flat on the ground. This has made the start far harder than it was -- probably 5.9+ or so.
Up past two bolts to a thin crack (gear section -- small gear needed, don't bother hauling anything big up this climb). Follow the crack upwards and right for a bit, to two more bolts. Anchor on tree(s).
Bolt line at the far right end of the cliff. Up slightly mossy steps to shelf, traverse a bit left & clip. Left of the bolts above a lip, then angle rightwards following the bolts. Anchor on tree(s).