I have apache 2.0.43 installed on linux and i want to us mod_dav but i
didn't enable it. if i recompile apache witht the webdav module do i just
use the make install or will that overwrite my existing files? how do i
keep my current setup while getting mod_dav working?

this seems simple but i can't find the answer.

Try using the apxs tool to enable mod_dav as a module in Apache. 
$ apxs -i -c mod_dav.c. 

See documentation for this http://httpd.apache.org/docs/programs/apxs.html

Or simply reconfigure apache as follows
$ ./configure --prefix= .....
                        .....
                        .... previous options 
                        --enable-modules="list of modules u want to enable"

OR                      --enable-dav

And then do make and make install
HTH 

deeZ

> I have apache 2.0.43 installed on linux and i want to us mod_dav but i
d> idn't enable it. if i recompile apache witht the webdav module do i just
u> se the make install or will that overwrite my existing files? how do i
k> eep my current setup while getting mod_dav working?

> this seems simple but i can't find the answer.