I've downloaded the driver for my HSP 56 Micromodem but it doesn't work. I've followed what is written in the readme but I had to change the .c file because it didn't want to compile. I just added a comma and it compiled. There's a part where it tells to write : insmod pctel
and this is the part that bugs.

insmod: can't read 'pctel': No such file or directory

So I modified the command for insmod /lib/modules/2.6.21-ARCH/net/pctel.o and also insmod with -f.

insmod: error inserting '/lib/modules/2.6.21-ARCH/net/pctel.o': -1 Invalid module format