This request has been fulfilled by primehalo's MOD [BETA] Prime Links - Classify Locals & Target Externals Thank you, prime!
here is good advice how to open links in a new window instead of the same window:
http://www.phpbb.com/community/viewtopi ... 6&t=544131
But I think converting the Local Links MOD to Olympus would be fine:
Regards## Mod Title: Local Links
## Mod Version: 1.1.0
## Author: netclectic < adrian [et] netclectic.com > Adrian Cockburn - http://www.netclectic.com
## Description: This MOD will cause any local URLs (i.e. http://www.YOURDOMAIN.com) posted to your
## board to open in the same window instead of in a new window, ( i.e. _self instead of _blank ).