Forcing LOWERCASE url via Server?

[CyberScout]

I am looking for a way to set our servers to change all typed in or linked URLs to lowercase.

An example would be if I typed in www.YaHoO.CoM/EntErTaInMenT/

Instead it would change to www.yahoo.com/entertainment before loading.

Any thoughts on where to begin looking for something like this or if it is even possible?

Thanks in advance
CyberScout

[liorean]

Hmmm maybe mod-rewrite can help? Or funneling a requests trough a php/cgi script doing it.