Looking for a Trigger to change inserting strings?

Question

I have an MSSQL Server 2008 Database.
There are some tables in my Database like below :
table1, table2, table3, ....
each table has a NVARCHAR(50) field (Name)
Now, I wanna change the strings that each sql query inserts in this field
e.g :
We have a query that wanna insert "Sample Text" in Name field.
I wanna change it to "Sample Name" with a SQL Trigger

Is it Possible with sql triggers ? if so, How? I'm naive in T-SQL
Is there a better way to do it with SQL Server ?