You can do that with the OpenDownload² add-on - https://addons.mozilla.org/firefox/addon/opendownload-10902

Here's another version if that doesn't work https://addons.mozilla.org/en-US/firefox/addon/opendownload-271182/

Thanks for all the replies, naively I thought this would just be an option in Firefox and not need an addin. Do they have a legal problem with supporting a 'run' option?

Anyway thanks for everyone's help, it seems a simple problem but it was driving me crazy (and back to IE!)

More for Security reasons and I guess also for so inexperienced users will not blame Firefox browser (instead of themselves) for infecting their computer because they ran the iamatrojan.exe before scanning the .exe first.

By the way the file gets download first before it is run by IE (which is a part of OS and filemanager) anyways.

I understood the security reasons for not making it a default but didn't see why it should be completely removed, just put warnings on the option if needed.

re download: yes I realise that at least it's to a temp area that can be cleaned up. All I care about is that I click and it runs, I do not want to worry about saving it, bringing up Windows Explore, finding it and then clicking on it again to run it.

Thanks a lot for the help, I hope Firefox won't dumb down the products to the lcd. It's tricky to design something that is simple to use but flexible enough to satisfy different requirements if needed but it is worthwhile.

Thanks Tony, appreciate the response, I hoping both solutions were the similar, I just clicked on the first one :-) Cheers Bee