Running Multiple Update Statements At Once

It started out pretty simple where I had to update about 40 contacts in the database and I would have 40 separate update statements I would run. The task has jumped to about 300 contacts and I don't want to run 300 update statements. I would like to run this all at once. For example:

update contact
set name = 'Name1'
where row_id = 'row_id1'

update contact
set name = 'Name2'
where row_id = 'row_id2'

update contact
set name = 'Name3'
where row_id = 'row_id3'

My DB is oracle 10, and TOAD is version 9.