I still agree with what everyone is saying, that it should be done professionall if you're not willing to try it confidently. But I've seen it done before and if the glass is in good enough condition you may be able to pull it off. And like I suggested before, if it goes wrong then you can still get it done and not be out much cash. It would be good for the experience.
Part of the reason I'm advocating experimentation is because I had a supra I was parting out, perect winshield, and the one I have now has a crack in it. I wanted to switch the good one over but my brother convinced me I was going to break it.
I'm sure if I had more time I would have done it but then again there were other factors for me. The scrap car had to get scrapped very soon because we needed the space, and also because I didn't have the space to store the good windshield at the time either. I say store because in case I screwed it up I would have no windshield instead of a cracked one so I left it.
Go out on a limb, try it out, I think that between the possible range of experience taken from the procedure versus the cost, it's worth it. I'll arbitrarily use $150 as the replacement cost to help point out what I'm getting at, in case you do not know.
If you try:
-Worse case, you break the windshield/screw up re-installation and pay $150 urethane/tools. You learn something.
-Best case, you install it without a hitch and you do so for a cheap price. Again, you learn.
If you don't try.
- Then you pay $150, but don't reall learn much.
The important thing in both incidences is that the rust gets taken care of properly.