orders from web - names

[steema@xxxxxxxxxxxxx]

HI We get some orders from web but through a service. Sometimes the
customer had entered bad data. For example the name will be replicated in
the first address field but will be in lower case, and the name may be
spelled out rather than a nickname (Patrica vs. Pat), but it seems the
last name is always there, altho in lower vs. upper.

How can I convert lower to upper so as to compare this last name, via the
SCAN ?

Thanks,
Steve