Should static database data be in its own Filegroup?

I'm creating a new DB and have a bunch of static data that won't change. If it does, it will be a manual process AND it will happen very rarely.

This data is a mix of varchars and Geographies.

I'm guessing it could be around 100K or so in total, over 4 or so tables.

Questions

1. Should I put these on a READ ONLY filegroup
2. Can I create the tables in the designer and define the filegroup during creation? Or is it only possible via a script?
3. Once the data is in the table (on a read only filegroup), can I change it later? Is it really hard to do that?

thanks.

It is worth it for VLDB (very large databases) for assorted reasons. For 100,000 rows or 100 KB, I wouldn't bother.

This SQL Server support engineering team article discusses one of the associated "urban legends".

There is another one (can't find it) where you need 300 GB - 1B of data before you should consider multiple files/filegroups.

But, to answer specifically

1. Personal choice (there is no hard and fast rule)
2. Yes (edit:) In SSMS 2005, design mode, go to Indexes/Key, "data space specfication". The data lives where the clustered index is. WIthout a clustered index, then you can only do it via CREATE TABLE (..) ON filegroup
3. Yes, but You'll have to ALTER DATABASE myDB MODIFY FILEGROUP foo READ_WRITE with the database in single user exclusive mode