www.selfharm.org.uk
this is a site I have been to a few times, and have also used info on it for a friend who's daughter had begun with SI.
Just outa interest, do your chn know the truth about your scars? Although my girls are younger I just say that "I just hurt myself" and blow it off like it is nothing...
I have some very noticable scars on my lower arms but no-one has ever asked me about them (surprisingly enough). I have found wheatgerm oil to be the most effective treatment so far.