nero vision ...... help please

angie1

tvb now,tvbnow,bttvb" H2 i! q! |+ T) y: I
tvb now,tvbnow,bttvb: q. g* r6 P( w9 y
i had already converted rmvb to mpg. i use nero 8 to burn  dvd. but why when
: `0 a, h4 s7 ^6 s' J! ni add file , it came out a message like this : unabe to insert C:............./ M5 w4 Z$ @: {# _0 y8 F+ e
just cannot add, why ?
# y  v- j2 b3 D5 l+ P! mcan someone help please 3 ?/ K$ F& J+ M9 F5 a
thank you