Don't fear, compiling isn't hard. You'll have to download the source for the Perl interpretor, and during the configure step, make sure to disable thread support (it'll ask you). To recompile Perl, you must have a standard C compiler and the C libraries installed.

Once you have the source, read the README and INSTALL files along with any platform specific information. The documents included with the source are very helpful and informative. You should be able to use them to successfully compile Perl. (If not, come back here and ask.)