How to operation multiple oper

I recently install Win 2000 in my original Win 98 computer. Since it said I could not directly upgrade it, So I chose the option “ install a new copy of Win 200(clean install) -

Currently, under Win 2000 , I could not use internet, it even has not speakers connected! So I wonder how I can move those stuff form win 98 to win 2000. the instruction says “if you install a new copy , you must specify new settings( 如何做,detailed步驟?)and reinstall your existing software( 我要回到win 98 的desktop 吧?)”

各電腦大俠，我很笨，請一定幫我，要想細點哦！
萬萬分的感謝！