解决了GOOGLE乱码的问题,原因是GOOGLE是以utf-8编码提交查询的关键词,通过判断来源是GOOGLE后,用以下函数进行处理即可:

function UTF2GB(UTFStr)
    for Dig=1 to len(UTFStr)
        if mid(UTFStr,Dig,1)="%" then
            if len(UTFStr) >= Dig+8 then
                GBStr=GBStr & ConvChinese(mid(UTFStr,Dig,9))
                Dig=Dig+8
            else
                GBStr=GBStr & mid(UTFStr,Dig,1)
            end if
        else
            GBStr=GBStr & mid(UTFStr,Dig,1)
        end if
    next
    UTF2GB=GBStr
end function
function ConvChinese(x)
    A=split(mid(x,2),"%")
    i=0
    j=0
   
    for i=0 to ubound(A)
        A(i)=c16to2(A(i))
    next
       
    for i=0 to ubound(A)-1
        DigS=instr(A(i),"0")
        Unicode=""
        for j=1 to DigS-1
            if j=1 then
                A(i)=right(A(i),len(A(i))-DigS)
                Unicode=Unicode & A(i)
            else
                i=i+1
                A(i)=right(A(i),len(A(i))-2)
                Unicode=Unicode & A(i)
            end if
        next
       
        if len(c2to16(Unicode))=4 then
            ConvChinese=ConvChinese & chrw(int("&H" & c2to16(Unicode)))
        else
            ConvChinese=ConvChinese & chr(int("&H" & c2to16(Unicode)))
        end if
    next
end function
function c2to16(x)
    i=1
    for i=1 to len(x)  step 4
        c2to16=c2to16 & hex(c2to10(mid(x,i,4)))
    next
end function
   
function c2to10(x)
    c2to10=0
    if x="0" then exit function
    i=0
    for i= 0 to len(x) -1
        if mid(x,len(x)-i,1)="1" then c2to10=c2to10+2^(i)
    next
end function
function c16to2(x)
    i=0
    for i=1 to len(trim(x))
        tempstr= c10to2(cint(int("&h" & mid(x,i,1))))
        do while len(tempstr)<4
        tempstr="0" & tempstr
        loop
        c16to2=c16to2 & tempstr
    next
end function
function c10to2(x)
    mysign=sgn(x)
    x=abs(x)
    DigS=1
    do
        if x<2^DigS then
            exit do
        else
            DigS=DigS+1
        end if
    loop
    tempnum=x
   
    i=0
    for i=DigS to 1 step-1
        if tempnum>=2^(i-1) then
            tempnum=tempnum-2^(i-1)
            c10to2=c10to2 & "1"  
        else
            c10to2=c10to2 & "0"
        end if
    next
    if mysign=-1 then c10to2="-" & c10to2
end function