Please help with updating my Kernal

OS: Linux, Redhat 9
Kernal: 2.4.20-8
Server Specs:
AMD Sempron 2400
1 Gig Ram
80 Gig HD
Control Panel: Cpanel

It is telling me to update my kernal (It gives me this link: 2.4.20-8); however I have limited/no experience with server management and am clueless.

Can someone please help me out with this. I've tried to give you gives as much info as possible about my server. Thank you.

 

 

 

 

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