I don't have AIM. I'll take a look at this tonight when I get home from work. I looked at my copy of Mastering Turbo Assembler last night and it has code in it to convert strings to integers.
I posted some code on Wednesday. http://pastebin.org/130179. The IO functions are DOS, not Linux, since I don't have a Linux box. I have not had time to do the intToString and stringToInt functions. The basic structure is there and it compiles and runs.
Its done except for checking for negative numbers. http://pastebin.org/133209 Compile with "nasm test.asm -fbin -o test.com" You owe me a few hundred dollars