Convert a assembly program to compile by Keil

hi everybody i have a assembly program and want to use it in my project . but keil don't compile this directly. i don't have enough knowledge to correct and convert code to keil could compile this...
Convert Assembly code to Keil C

Amount line code about 300. So that, you could help me by indicate some ebook step by step to solve this case. If anyone can help me to convert,i'm very happy. Plz mail victorvn2003@yahoo.com MJ, ...
Assembler to C converter

Does anyone know of a converter to take 8051 assembly source code to C source code.
convert "c"to <<assembly>>

dear sir; i use " c51.exe file.c SRC "for compile c source to assembly(file.a51). then "A51.exe file.a51" for convert to object code . but this produre is wrong. please help me
Converting C codes to Assembly

Hi, I have converted some of my C codes to assembly codes (*.a51) in my project. I would like to know if I need to specify it in the A51 window under the Options for Target settings.