I just got Mint linux. I was looking for the connection wizard like windows has. Of course its more complicated. Reading online I read how to download firmware and reprogramme my modem. I had not thought before how modems are for windows. I phoned my ISP provider and they supply routers. I was hoping to cut costs with linux so already I am wondering whether to instal Windows so I don't need a router. Also I am worried about finding antivirus and mail sorting of junk as most programmes are for windows.

I am looking for a newbie training package and have not found it yet, but I did see a book mentioned on one of these pages so I will try that. I don't understand why linux does not include a simple help page on internet connection as it's so necessary.

If I did reprogram my modem with firmware it would then be useless for my laptop and second PC on XP windows.

Welcome to Linux questions!

Very few people use modems these days as, with more complex web pages and larger files being downloaded, they're just too slow. Most people use a router supplied by the ISP.
Which programs? Programs for Windows won't run on Linux though some can be run by using an application layer called Wine. There are usually native Linux alternatives you can run.

Tell us what your set up is just now to help us answer your question properly.

Play Bonny!

No, not really...it's just different than what you're used to. Personally, after years of using Linux-only, I find Windows VERY difficult.
You probably don't need to 'reprogram' your modem, or do anything. If you told us what kind of modem (brand/model), on what kind of computer, and what version of Mint, we can probably help you get it going easily.
There are many antivirus programs for Linux...but they're typically not needed, since Linux (by design) is more secure. You'd almost have to work hard to get a virus. Don't know what you mean by "mail sorting of junk", but there are MANY email programs available for Linux, that have very robust spam filtering software.
You've already got them. Most Linux commands and programs have built-in help. From the command line, type in "man <command name>", and the complete manual page will pop up, telling you what the command does, how it works, and what options you have. In GUI based programs, click on Help.
No, sorry. Firmware updates are just for the device IN GENERAL. It doesn't affect compatibility.

Again, tell us what brand/model of modem, how you're connecting it to your computer, and what version of Mint, and we can help. Without details, no one can assist.

On most distributions there would be no problem using your existing equipment with no problems. I must admit that I have never used Mint, but I'm surprised that you seem to be stymied. Can you tell us which "modem" you're using? (Make?, model?) Several years ago - last century, I think - there were several manufactures that produced "Win Modems" which relied on Windows propitiatory drivers, and would not work on any other OS.

In any case, can your system be booted from a CD or DVD? If so, consider downloading and burning several different "Live CD" distribution versions and booting then to see if they would support your modem "as is." That would be a way for you to try several different distributions before installing any of them.