I guess Notepad is on Windows? Then you need to add a <CR> (0x0D) char before the newline char at the end of the line. Don't know if uuencode can do this for you.
@Rudic, Thanaks for the reply. Yes your correct, notepad in windows. We are Using AIX OS, Is there any posibility other than uuencode so that we can use <CR> . and could please explain the <CR> concept .
Text is treated differently in UNIX and in Windows. UNIX only requires a newline char (hexadecimal 0x0A) while Windows needs two chars: carriage return (<CR>, 0x0D) plus newline to end a line. As joeyg points out, there might be other editors (e.g. EDITPAD) that can handle UNIX text. A powerful alternative to unix2dos is recode (e.g. recode lat1..ibmpc file1.txt)