Setting up a network between 2 comps (Mac)

OK, so heres the deal.

I currently have a network set up between a Windows PC and a PowerMac G4. This is fine and is running smoothly (I did not set it up :D). I have an old Power Mac 9500/200 that contains alot of files and folders that are needed. To speed the transfer process up I want to connect the old computer into the existing network for the transfer and future use but don't know how.

Any and all help will be appreciated.

I have the hub set up with the network cables and whatnot already.

Well, I've figured out this problem on my own, thanks for all your help... :D

But alas, a new one has arose. On the G4 I downloaded Firefox, after it was done downloading an installation window did not open or any prompts for that matter. I open the folder and it is a Excel spreadsheet full of encyption and whatnot. Can I convert this into a useful file so I can install Firefox? I downloaded it twice, just in case it was a mistake as well but it did not work.

Again, any help would be appreciated.

Well, I've figured out this problem on my own, thanks for all your help... :D

But alas, a new one has arose. On the G4 I downloaded Firefox, after it was done downloading an installation window did not open or any prompts for that matter. I open the folder and it is a Excel spreadsheet full of encyption and whatnot. Can I convert this into a useful file so I can install Firefox? I downloaded it twice, just in case it was a mistake as well but it did not work.

Again, any help would be appreciated.I'd try typing "chmod +x 'directory'/'filename'" in the Unix console to see what happens...