When you move to 7.2, I've documented how to do that here: http://saleslogixblog.com/rfarley/archive/2007/12/14/38681.aspx 
As for pre-7.2, you can do it, but it does take some "trickery" and doesn't work quite as seamless as it does in 7.2. Here's a sample I created a long time ago to log into the full SLX client from another non-slx page. Maybe it can get you going in the right direction? The key here is to send a POST to the login method of the slxweb.dll and provide the login details in the form. Copy the following HTML into a new file and change the "[server]:[port]" to match your SLX web server then give it a try.
<html>
<head>
<title>SalesLogix Login</title>
<script language="Javascript" src="http://[server]:[port]/slxweb/jscript/default.js"></script>
</head>
<body>
<form name="mainform" language="JScript" onsubmit="GetTimeZoneInfo();" method="post"
action="http://[server]:[port]/scripts/slxweb.dll/login">
<input type="hidden" name="nextpage" value="mainpage">
<input type="hidden" name="tz_info">
User:<br><input type="text" name="user"><br>
Password:<br><input type="password" name="password"><br>
<br>
<input type="submit" name="submit" value="Log in to SalesLogix">
</form>
</body>
</html>
Anyway, not exactly your solution, but maybe it will get you in the right direction.
-Ryan |