Using form data to filter site content

[Jared]

I'm trying to determine how to use FrontPage to construct a SharePoint
site that will have a "search" page to allow users to:

1) Search for a record from a list
2) Select that record
3) Store a field value from the selected record
4) Filter all lists on all pages using the stored value

If I were making an ASP.NET site, I'd add a TextBox to my form,
display a list of matching records on PostBack, store the selected
record's identifier value to a Session variable, and use that Session
variable value to filter all other pages on the site.

Because my client wants to be able to manipulate the site without the
help of a developer later, I'm trying to accomplish this without
custom coding. However, if FrontPage cannot accommodate this, I'll
probably create a simple, connectable WebPart that can read a posted
value, handle the storage/retrieval with a Session variable, and make
that value available to connected WebParts.

I'd very much appreciate any recommendations for doing this in
FrontPage and/or criticisms of the custom approach outlined above.

TIA

Jared