Assuming you have the patch on a floppy, you obviously need to get it onto your system - try copying it by the commandline using the 'cp' command, ie
change to the floppy directory (using cd >path _to_floppy< )
cp >patchfile_name< >path_to_directory<
....if the folder /usr/shared/speedtouch already exists, you can use this path.
Hopefully this will put the file where you say it needs to be.
BTW, what kind of file is this 'patch'? Is it a tar file, .txt file or even an rpm file?? The installation differs for each type.
It would probably be even better if you can post the message that tells you to apply the patch, as well as the patch file extension.......
One last thing - you say Control Centre didn't find the modem - did you try the wizard in Network > Connection or are you relying on the hardware list?
It may be greek at the minute, but it's easier than it sounds
It wont be long before you get Windo$e out of your hair.....