i am really in needing to know how

Either use a higher-rated pot, or modify the circuit to take one with a higher resistance.

Depending on the circuit, you can also replace it with active components.
 
Yeah, you will need a variable resistor that can dissapate more heat, or you will need to reduce the amout of current though it.

What is it for?
 
Please post a schematic.
 
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