download the following rpms on ur pc:-

http://dag.wieers.com/packages/chmlib/chmlib-0.35-1.1.fc3.rf.i386.rpm

ftp://rpmfind.net/linux/dag/fedora/7/en/i386/dag/RPMS/wxGTK-2.4.2-5.1.fc3.rf.i386.rpm

http://acmserver.cs.ucr.edu/%7Ensoracco/rpms/xchm-0.9.8-1.i386.rpm

and also install them in the same sequence. using the command:-

rpm -ivh

Note:- i am giving the path of packages for fedora cpre 7. if want for any other os take a look at the following sites.

chmlib:- http://dag.wieers.com/packages/chmlib/

wxGTK:- ftp://rpmfind.net/linux/dag/

xchm: - platform independent for all redhat's.............