First off, I am not Catholic, I am a Christian so here I go;
In believing in God and trully commiting yourself to him, His Holy Spirit is suppose to enter you. You are suppose to be inhabited by the Holy Spirit, and naturally our life should start to change because we will WANT it to. I am not saying that it won't be hard like giving up maybe drugs, or whatever other thing that you may be obsessing over (maybe even a television show) but we are suppose to feel convicted about doing things wrongs.
WE DONT HAVE TO GET RID OFF THEM
but when the Holy Spirit comes,
we want to!
In commiting suicide, there are some points to consider in why that person did.
Obviously it is making a mockery out of God and abusing his creation, OURSELVES
Yes, they go to Hell.
Question to ponder then:
what if they had confessed that Jesus is Lord and recieved Him and all that stuff. I believe that salvation is a eternal thing and you can never lose it. If you do, you were never trully a believer, so if you commited suicide, then you never really accepted and believed in God.
It's not fair some may say,
well it's not fair how we all spit in God's face everyday and abuse all of the glorious gifts He has given us.

QUOTE(1angel3 @ Jun 27 2007, 08:08 PM)

I believe the people that go to hell don't stay forever, I think so because people say God is a forgiving God. Well xKatt you say chritians believe if you kill yourself you don't deserve to set foot in heaven when its not like that, yeah you'll go to hell but you don't stay forever, I think a good example is you can do something wrong, your parents find out, and they put you on punishment. You don't stay on punishment forever. God see us as his children.
Thats a point of view from a christain.
No, it's not a view from a christian, that is more like a view point of a Mormon, they believe that Hell is not eternal damnation.
QUOTE(xKatt @ Jul 22 2007, 11:27 PM)

Well God created the garden of Eden and told Adam and Eve that they could eat the fruits of every tree (except one), so I guess He didn't mind that they were tearing His creations off their limbs and devouring them.
It's an interesting point though. You're right... wouldn't destroying the world's air, water and land be considered in the same ballpark as destroying one of God's creations (namely yourself)? Would that mean that all the people responsible for the Danube cyanide spill are going to hell? The people involved in the nuclear testing at Bikini Atoll? The people involved in the shrinking of the Aral Sea? Something to think about. 
I think you're taking this totally out of context.
God NEVER said don't kill plants and trees, if we look in the Bible it says:
"Do not murder" And it is easy enough to say that it is in context with harming another
HUMAN BEING ON
PURPOSE.Though I do believe war is excluded from what murder is, because you are either protecting your country, someone elses, or you are trying to conquer land. Though I do have to say it does deal with the motive of the heart, so that could be a whole different discussion.
ALSO::
YES- that means that if you hate someone in your heart, even NOT to lengths of MURDER you are guilty of actually MURDERING someone.