nero vision ...... help please

angie1

. I4 \, j& D" Q* e' ]3 f0 rtvb now,tvbnow,bttvb
* Y4 K4 {+ q1 c- j& Qtvb now,tvbnow,bttvbi had already converted rmvb to mpg. i use nero 8 to burn  dvd. but why when
+ U& Y2 M9 U. v% \2 `/ L7 o7 w; v5.39.217.76i add file , it came out a message like this : unabe to insert C:.............
2 D$ F1 I$ w/ ujust cannot add, why ?4 ?4 X' z" L4 T6 C! f
can someone help please
+ s0 V# X- \, X4 x. H+ K! Rtvb now,tvbnow,bttvbthank you