Anyone know of any good tutorials for making a code interpreter in c++, or know how to do it? I'm not finding much documentation out there (other than books I cannot buy), althought I'm sure I'm just looking in the wrong places. Any help would be appreciated. Thanks.

Just implement Lua, Tcl, Perl or Python as built-in interpreters. Look at the appropriate documentation on the official websites for each language.

If you want to make your own then you can check gamedev.net and gamedev.com, I recall seeing few tutorials there. Also theres a set of tutorials floating around about building a pascal compiler from scratch which also can help.

If you're serious about comp/inter building then i would suggest the dragon book, which is awesome.

oops