How to use threads in visual basic 2005????

How to use threads in vb 2005.
for ex. In 2003 , after declaring object(say t1) for system.threading.thread,
we can use t1.start(),t1.resume(),t1.suspend(),t1.sleep(),t1,abort().But in visual basic 2005 i can't use the same start,resume,......,.How can i use it ... any one help me..