Backup original file:

cp -Rp /home/cpeasyapache/src/mod_bwlimited.c /home/cpeasyapache/src/mod_bwlimited.c.bak;cp -Rp /usr/local/apache/modules/mod_bwlimited.so /usr/local/apache/modules/mod_bwlimited.so.bak
Edit the file:

vi /home/cpeasyapache/src/mod_bwlimited.c
find: The server is temporarily unable to service

and edit that lines around that. I was able to use html tags like <br /> to add line breaks or <a href=http...>). Make sure not to use quotation marks so you do not break the code.

Save changes (Esc key, :wq , enter key)

Compile the file:

/usr/local/apache/bin/apxs -iac /home/cpeasyapache/src/mod_bwlimited.c
restart httpd:

service httpd stop;service httpd start;service httpd status
Now the bandwidth limit exceeded page should be working fine, veriffy that.

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In case something went wrong during file editting, restore backup file:

cp -Rpf /home/cpeasyapache/src/mod_bwlimited.c.bak /home/cpeasyapache/src/mod_bwlimited.c
and then recompile file and restart htttpd:

/usr/local/apache/bin/apxs -iac /home/cpeasyapache/src/mod_bwlimited.c
service httpd stop;service httpd start;service httpd status