nero vision ...... help please

angie1

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5 v% ?+ e; f# T) Ji had already converted rmvb to mpg. i use nero 8 to burn  dvd. but why when
  F- j) G) W) d% `i add file , it came out a message like this : unabe to insert C:.............
' s  Y7 g# k: zjust cannot add, why ?
6 q% i5 c* Y0 OTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。can someone help please 5.39.217.77:88988 |0 Q$ [% T+ @, w
thank you