<p>Has anyone seen a good twin slider control for .Net (Win forms or WPF).</p>

<p>I'm looking for something that will allow me to select a range from within a set so the first slider would be the start of the range and the second would be the end.</p>

<p>I remember seeing a Swing double slider but it was 6 years ago and I can't for the life of me remember who made it. It was open source though.</p>

Devexpress have a good one:
The RangeTrackBarControl control extends the functionality provided by the TrackBarControl enabling end-users to select a range of values. Two sliders can be used to set the minimum and maximum values:
alt text http://www.devexpress.com/Help/XtraEditors/img/RangeTrackBarControl.png
you can get them free from:
http://www.devexpress.com/Products/Free/WebRegistration/
hope this helps!