redhat fedora gcc version (compiled for 2.4.20) doesn't match kernel version 2.4.22
 

I bought red hat linux bible by negus. I intalled the 3CDs with the book (workstation of fedora). I tried a trivial program from linux device driver "hello world". I tried gcc and gcc32. run /sbin/insmod ./hello.o.

The error message is like "gcc is compiler for kernel 2.4.20 not 2.4.22. I am new to linux world. Could anyone tell me what to do please?