You made a mistake in buying Netscape commerce in the first place, but don't despair! You can still get Apache, an excellent web server, and an unencumbered SSL module that you can use without restriction outside the U.S. (if you want to run it inside the U.S. you need to pay a fee because of the patents on RSA).
The browsers present a bit of a problem as well -- the free Netscapes that people download uses small keys, so it won't matter if you use an Apache or Netscape server if people browse your site with Netscape navigators. I think there are full strength Mosaic's available, but I've never used them. Also, you should check to see if you can get a verisign certificate for the international version of apache-ssl -- if you can't, that might cause you problems as well. The best answer for these sorts of problems (at least for those of you not constrained by ITAR) might be java form processing applets that use their own crypto routines to submit the data.