sorry for late reply



well if u have done a conventional installation that is installing in c drive. there must be a folder called TASM must be created
most imp searchfor two files mainly
1....

well did u try that in tasm ....? that is the turbo assembler . (its kinda preferred )

well why dont you try tasm (mostly doesnt disappoint ) .
besides why dont u try the following code

.model small
.stack
.data
str db "Welcome to assembly $"
.code
mov ax ,...

Well the best book as far as i have know is
Assembly language step by step - jeff duntemann
he teaches you from the scratch.
well after reading the whole book if u still want to develop more...