Board Thread:Support Requests - Getting Technical/@comment-4962933-20140715221027

I would like my template at http://nemosreef.wikia.com/wiki/Template:Infobox_Rare_Fish to display commas when numerical values above 999 are entered into certain fields. This would save editing 60+ pages individually. I tried searching for a way to do this, but I don't know whether I need a script, parser, or other type of code. I appreciate any guidance on this. 