Isn't there a keystroke thing that works also? Like CTRL, left click twice or something?
I'm on a Mac, but yeah there's the ALT/OPTION key if you want to snap on your "alternate" grid setting, and not your regular grid setting. But this works only on the current line/net/wire you're drawing.
The script will work on everything already laid out on your schematic.
There are other useful scripts like Board Statistics ("statistic-brd.ulp") which gives you X/Y dimensions of your board, how many pads, holdes, vias, smd top, bottom parts you've used, etc... useful when sending quote jobs to pc board manufacturers. There's also the BOM Bill of Materials Script, panelizing, etc.