Cannot install new filters in the FF1 version

I have bought a new computer and still have FF 1.09. When I try to install new filters I get the answer that firefox does not know how to install because the file is not associated to a program.
I have made the association to the .ffxml in windows, but it does not help.
I cannot find any download possibility for the first version, just the FF3
Just now I have ff3 as trial, but i have not the money to buy it yet, therefor I am cntinuing to use the original version.
can you help?

My forum name is gunsan
I have the registerd version of FF 1.09 but I know there have been updates to this many times.
All this stuff has of course disappeared when I changed computer
Can I download the latest version of the FF1 anywhere?

Thanks for help
Gun Legler

Yes it does
Gun

Brfore I associated .ffxml to FF in Firefox FF3 installed OK but not FF1
Now either of them can install new filters when I click on install in filterforge both Firefox and Explorer says that they cannot install because Filterforge already is running, so now i cannot install at all, not in FF3 like before
Don'tknow what to do.

Installing this did not solve the problem. I cannot download filters neither in FF1 nor FF3 now
Before I created the file association in Firefox, I could download filters in FF3 but not in FF1.
Opening Explorer gives the same result.
Semms that I have to stop using FilterForge

I discovered that I can install new filters from inside Photoshop without problems inFF3.I have just a week left on the trial, so I hope I can solve the FF 1 problem before that.
I tried before in the program I use the most and always have used for FF: PaintShopPro.
Well, I will try to install FF1 to Photoshop too, but I don't know yet how it will work
I guess I will rtirn later if I don't can find any solution.
Thanks for trying to help!