Sure, no problem..
This is what you need to put in a file called index.html on your website via ftp to forward your domain to an affiliate link:
Code:
<HTML><HEAD>
<META NAME="description" CONTENT="WEBSITE.com">
<title>Title of page</title>
</HEAD>
<FRAMESET border=0 rows="100%,*" frameborder="no" marginleft=0 margintop=0 marginright=0 marginbottom=0>
<frame src="http://www.my-affliate-link.com/" scrolling=auto frameborder="no" border=0 noresize>
<frame topmargin="0" marginwidth=0 scrolling=no marginheight=0 frameborder="no" border=0 noresize>
</FRAMESET>
</HTML>
Remember to replace
http://www.my-affliate-link.com/ with your affiliate link and enter the title of the page etc.