Display problems with IE 5.x (Win)

I have a strange problem with IE 5.x which does not show up on other
browsers / systems.

http://www.westerntrainerin.com/

It is in basic.css on line 186 (inserted Tantek Hack to make the content
visible in IE5, otherwise it would be hidden) where I have a problem
with _margin: 0 0 30px 166px;_ which works well in all browsers, except
for IE5.

#inhalt {
position: relative;
background-color: #FFFFFF;
margin: 0 0 30px 0; /* IE5 very buggy */
voice-family : "\"}\"";
voice-family : inherit;
margin: 0 0 30px 166px; /* IE6 knows what to do */
border: 9px solid #D2DBE1;
padding: 0 205px 0 23px;
}
html>body #inhalt { /* good browsers get this one */
margin: 0 0 30px 166px;
}

I am all lost ... tried almost every hack I know and it still does not work.

Regards,
Nils

managed to fix most of the problems (in IE5) on my own ...

It is in basic.css on line 186 (inserted Tantek Hack to make the content
visible in IE5, otherwise it would be hidden) where I have a problem
with _margin: 0 0 30px 166px;_ which works well in all browsers, except
for IE5.

by using this part:

#inhalt {
position: relative;
background-color: #FFFFFF;
margin: 0 0 30px 0; /* IE5 very buggy */
border: 9px solid #D2DBE1;
padding: 0 205px 0 23px;
width: 99.9%;
voice-family : "\"}\"";
voice-family : inherit;
margin: 0 0 30px 166px; /* IE6 knows what to do */
width: auto;
}
html>body #inhalt { /* good browsers get this one */
margin: 0 0 30px 166px;
}

However, there are quite a few more bugs, like resizing problems in all
IE-Browsers.

Regards
Nils