Maybe I figured it out myself, this worked great. Let me know if you have any comments on what I should maybe change.
proc main
integer iDay, iMonth, iYear, iHour, iMin, iSec, iEntries, iCount
string sWB, sName, sTftp, sPrompt, sTemp
sdlginput "TFTP Server" "Enter TFTP Address" sTftp...