Bios Mods -The Best BIOS Update and Modification Source

Hi! I would like to have a modded BIOS for my Extensa 5420!
I would like secret settings like overclocking, and IDE mode (If that's possible)
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SPECS :
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AMD Turion X2 64 TL-58
ATi Mobility Radeon HD 2400XT 
SB600 Chipset
HDD 500GB
4GB RAM (DDR2)
ETC, ETC
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BIOS LINK :
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http://global-download.acer.com/GDFiles/...2318642909&Step1=NOTEBOOK&Step2=TRAVELMATE&Step3=TRAVELMATE%205520&OS=V10&LC=en&BC=ACER&SC=PA_6
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