need installer advice

I need an installer for one project. I need something FREE with a GUI interface and I need it to be able to detect what OS it is installing on so that it will not install on versions of Windows that I choose not to support.

Does anybody know of such a critter?

I found a couple of $$ ones that do this, but just can't afford them.

Personally I use NSIS. Others around here use InnoSetup.

Well, use NSIS and look at manual from

Appendix C: Useful Scripts\Get Windows version

You can get what you need.

Inno has similar functions, too.

I use Inno 5.

We use INNO but that's just the one we got used to first and stuck with it.

InnoSetup with ISTOOL! DO it - it's easy and the best!