Updated - Just put this in a room and anyone who types will type in fancy letters.
--------------
Room Script
--------------

ON OUTCHAT {
{ "$1Å$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)a(.*)$" GREPSTR } WHILE
{ "$1ß$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)b(.*)$" GREPSTR } WHILE
{ "$1©$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)c(.*)$" GREPSTR } WHILE
{ "$1Ð$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)d(.*)$" GREPSTR } WHILE
{ "$1Ë$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)e(.*)$" GREPSTR } WHILE
{ "$1ƒ$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)f(.*)$" GREPSTR } WHILE
{ "$1[¦]$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)h(.*)$" GREPSTR } WHILE
{ "$1Ï$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)i(.*)$" GREPSTR } WHILE
{ "$1|<$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)k(.*)$" GREPSTR } WHILE
{ "$1£$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)l(.*)$" GREPSTR } WHILE
{ "$1Ñ$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)n(.*)$" GREPSTR } WHILE
{ "$1Ø$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)o(.*)$" GREPSTR } WHILE
{ "$1þ$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)p(.*)$" GREPSTR } WHILE
{ "$1®$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)r(.*)$" GREPSTR } WHILE
{ "$1§$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)s(.*)$" GREPSTR } WHILE
{ "$1†$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)t(.*)$" GREPSTR } WHILE
{ "$1Ü$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)u(.*)$" GREPSTR } WHILE
{ "$1\\\\'\$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)w(.*)$" GREPSTR } WHILE
{ "$1×$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)x(.*)$" GREPSTR } WHILE
{ "$1¥$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)y(.*)$" GREPSTR } WHILE
{ "$1¿$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)?(.*)$" GREPSTR } WHILE
{ "$1¡$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)!(.*)$" GREPSTR } WHILE
{ "$1°$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)0(.*)$" GREPSTR } WHILE
{ "$1¹$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)1(.*)$" GREP STR } WHILE
{ "$1²$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)2(.*)$" GREPSTR } WHILE
{ "$1³$2" GREPSUB CHATSTR = } { CHATSTR LOWERCASE "^(.*)3(.*)$" GREPSTR } WHILE
} CHATSTR "^;*(.*)$" GREPSTR IF

By looking at this one I can tell its messed up as well. Hold on

Updated - Tell me if it works

works great now thank you for the update with it