Inserting Different Case Data

Currently am migrating my data from oracle to sqlserver. Here is a senario where am struck.

CREATE TABLE TEST (COL1 VARCHAR(90), CONSTRAINT TEST_PK PRIMARY KEY (COL1) );
INSERT INTO TEST VALUES ('test');
INSERT INTO TEST VALUES ('TEST'); -- UPPER CASE data

The above is acceptable in oracle but in sqlserver in case insesitive database the second value is not accepted as it voilates the PK constraint. I searched the forums and found below link

http://www.dbforums.com/t905653.html

But on doing it resulted in below error:

Server: Msg 5074, Level 16, State 8, Line 1
The object 'TEST_PK' is dependent on column 'COL1'.
Server: Msg 4922, Level 16, State 1, Line 1
ALTER TABLE ALTER COLUMN COL1 failed because one or more objects access this column.