Can't root LG Marquee

I been trying like crazy to have my LG Marquee rooted but can't. When running root it saids:
Part of Code from Gingerbreak c 2010-2011 The Android Exploid Crew.
+found a gingerbreak! 0x00015118
*sending 149 zerglings
* trying a new path

it do it some times trying and trying and then:

-Zergling did not leave interesting stuff
installing root tools .........permission denied

I think that doesn't found SU.

Any body knows what to do? My e-mail is josejtorres2537@gmail.com. Thank you.

I wouldnt recommend using Gingerbreak, as it sometimes work, but very often doesnt. I would recommend going here and following the root guides:

http://forum.xda-developers.com/forumdisplay.php?f=1190