HaloMods "Classic" Read-only Archive

I have two things that I am curious if they are even possible.
I'm pretty sure it's not, but is it possible to convert the water on death island to ice?
And secondly is it possible to mod it some either yourself or another character are invincable(sp)?

invulnerability is easy, either swap the collision model of the cyborg for the warthog, or (this one's better) go to cyborg's collision model and change all body damage multipliers (and shield if you do so wish) to 0. this way you can't incur damage

thanks, im guess that the water to snow thing is impossible.