Printer Escape Codes for Epson stylus color 460?

I am trying to write to my epson color stylus 460 printer using a program I have written. I have created a header file that contains fprint statements that look something like this:

fprintf(prn_ptr,"\x1B...");

What i need is the escape sequences to perform the following:

switch bold on
switch bold off
switch underline on
switch underline off
swith italic on
switch italic off
reset (or initialise)
landscape on and off
portrait on and off
condensed on and off

Can anybody help me?
I have tried the epson homepage but have had no luck
Thanks
Dan

Could you do these effects with DOS, or do you have to use windows, with multiple fonts, etc.

I am using DOS as I cannot access my epson printer at all trough windows. I have been told that it is not really possible or easy to do this through windows. I am now using turboc in DOS.

A guy named Van Wolverton used to write books on doing tricks with DOS that went into all the escape codes.