if you used the --enable-module option to 'configure', then you will not see a LoadModule line in the httpd.conf file. You will only see that when you compile (and use) a module as a DSO -- and most of the time you need to add it yourself.
As long se you see mod_rewrite.c in the output of `httpd -l`, you can use mod_rewrite in your config. You may want to use <IfModule mod_rewrite.c></IfModule> so that the config will work whether or not the module is installed.
As for suexec, it's a bit more complicated. 'suexec' is VERY picky and NEEDS to have its criteria satsified in order to run. I'll suggest that you read
Apache Group's suexec documentation before even attempting to start.
There are a number of ways in which you can go about setting this up. I could go into detail, but I fear that it would become rather mundane.