nero vision ...... help please

angie1

8 L" e4 a, g2 m. r

  w5 \1 ?1 m$ q* j5 @: di had already converted rmvb to mpg. i use nero 8 to burn  dvd. but why when
# J# K+ b) `: Y公仔箱論壇i add file , it came out a message like this : unabe to insert C:.............
; e% N4 S. J8 W2 H- v' njust cannot add, why ?
5 H) W, @' J1 w7 `0 ^can someone help please 5.39.217.776 b" F( f4 W. I- @1 }
thank you