I'm looking for a PDF creator for Windows 3.1 or some sort of converter from RTF to PDF or HTML to PDF. I want my PDF's to be viewable in Acrobat Reader 3.

www.fineprint.com do a pdf generator (PdfFactory), don`t know whether its 3.x compatible tho, and you need to register it to get rid of the watermark but the trial download is free.

I use it a lot to make pdf`s of webpages i want to look at later as its much quicker than Adobe Acrobat to load and uses far less resources, basically its just a printer driver, and you send the file to print and select fineprint pdf factory to print it to a file, it has preview if that important to you.

HTH

Woof

Curiosity may have killed the cat but at least the cat wasn`t bored

Just had a look at the fineprint site:

System Requirements: Windows 95, 98, NT, 2000, XP, 2003 Server with at least 256mb RAM.

you should hopefully be able to find an older version or alternatively contact fine print to see if they ever did a 3.x version.

Car boot & yard/garage sales are a good source of trial software on old magazine coverdisk etc for older Os systems
HTH

Woof

Curiosity may have killed the cat but at least the cat wasn`t bored

There is hope!!!!!!!!

http://www.fineprint.com/support/pdffactory/

Can I download pdfFactory 1.x?
pdfFactory 1.x is no longer supported but you can download if you need to using the links below.
pdfFactory
http://www.fineprint.com/release/fpp164.exe

pdfFactory Enterprise
http://www.fineprint.com/release/fppe164.exe

pdfFactory Pro
http://www.fineprint.com/release/fpppro164.exe

pdfFactory Pro Enterprise
http://www.fineprint.com/release/fppproent164.exe

Hopefully one of these will be 3.x compatible

as for Acrobat compatibility:

What version of PDF does pdfFactory support?
pdfFactory supports PDF 1.2, 1.3, 1.4 or 1.5 depending upon the requirements of the document. We try to use the lowest version possible in order to maximize Acrobat Reader compatibility.

Woof

Curiosity may have killed the cat but at least the cat wasn`t bored

This one explicitly mentions Lose3.1, though it is a commercial product (US$100+):

http://www.amyuni.com/en/products/pdf_converter/index.html

This claims to make PDFs online, but whether it puts watermarks or other graffiti on your document, I don't know. (And do you really want your information going naked to a website?)

http://www.sanface.com/createpdf.html

While digging, I ran across this freeware editor. I know it's not a PDF maker, but it's probably useful for Lose3.1 fans:

http://www.kobayashi.com/prolix.html

And this too:
http://www.geocities.com/SiliconValley/Hub/3650/