need help wiith the TMPGEnc 4.0 XPress

屁屁zzz

can anyone please help me with the TMPGEnc 4.0 XPress,when i covert the rmvb to mpg, the files are so big,how can i size it down.www3.tvboxnow.com3 _9 ]* l5 x- t2 e( ?
thank you so much!!!