Floating left and right

I think floating elements is very difficult that I keep wanting to just use tables, but I want to try CSS.

The following places two elements beside each other but in IE they are on top of each other. Why and how can I make them stay beside each other?

<style>
<!--
#login .loginform
{
border-top:1px dashed #ccc;
border-bottom:1px dashed #ccc;
background-color:#FFFAE8;
padding:10px;
margin:0px;
position:absolute;
width:520px;
}
#login fieldset {
border:1px solid #fff;
padding:10px;
margin:0px;
}
-->
</style>

<div id="login">
<div class="loginform">
  <p>
<div class="csh">Choose your posting method</div>
<fieldset style="float:Left; margin-right:5px; text-align:left"><legend>Login or register to track your comments</legend><form method="post" action="inc_login.asp" name="loginForm">
  <input type="hidden" name="loginaction" value="1">
  <input type="hidden" name="redir" value="#commentstop">
  <div>
<fieldset>Username:</fieldset><input name="username" type="text" value="" size="10"><fieldset>Password:</fieldset><input name="password" type="password" value="" size="10"><fieldset><input type="checkbox" name="rememberMe" id="rememberMe" value="True" class="altInput"></fieldset><label for="rememberMe"> Remember me</label><div><a href="register.asp?redir=http%3A%2F%2F63%2E134%2E233%2E5%2Farticle%2Easp%3Fid%3D2391%26idcategory%3D30%26idsub%3D157%23commentstop">Register</a>  |  <a href="lostpw.asp">Forgot your password?</a></div><div><input type="submit" name="submitBtn" value="Login"></div></div>
</form></fieldset>

   <form method="post" name="BlogForm" action="comment.asp">
 <input type="hidden" name="FORM_TO_PREVIEW" value="Comment">
      <fieldset style="float:right; margin-left:5px; text-align:left"><legend>Post anonymously</legend>
<fieldset class="csh">Name: *</fieldset>
  <input name="a_comment_name" type="text" size="20" maxlength="50" value="">
 <fieldset class="csh">Email:</fieldset><input name="a_comment_email" type="text" size="20" maxlength="50" value="">
<fieldset class="csh">URL:</fieldset>
  <input name="a_comment_url" type="text" size="20" maxlength="50" value=""></fieldset></p>
</div>
</div>

Code (markup):

 

You might first get your html right. Put the fieldsets in the form.

<form ...>
  <fieldset>
    <legend>...</legend>
    <label for="...">user<input type="..." id="..."></label>
    <label for="...">password<input type="password" id="..."></label> 
  </fieldset>
  <fieldset>
    <legend>...</legend>
     ...
  </fieldset> 
</form>

Code (markup):

It looks like you may have overdone the use of fieldsets .

cheers,

gary