User defined trends

i need to create a trend that is configurable by the users in a client as opposed to in the designer. i need to user to be able to select the pens from a list of all possible history tags similar to brwosing for tags in the easy chart designer. we are currently using the SQL Tag Historian to log the data that will be trended.
what is the best way to go about this?
is there a way to access the easy chart configuration parameters from the client?
Should i consider switching to logging in Transaction groups for easier access to the data and the path names?

Thanks for the help,

have you looked at the click to graph stuff that is available by download in the extras?

diat’s suggestion is the way to go. This would give you the functionality your looking for.

Thanks, just downloaded it and will check it out.

You mean something like this?