smoothing at the point of joint of curve and line

Hai every one,
I am using VB to draw autocad objects. Here i need to join a line and curve. but at the joint it should not appear as a joint
I mean at the point of joint , it must be smooth and it should not be seen as a joint. How can I do this.
Thnks in Advance
bye
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FILLET
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MichaelB
www.michaelbulatovich.ca
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