Would it be wise to use linq to sql on the tables generated by asp.net reg_sql tool? i would like to be able to do some operations on the dbo.aspnet_webEvents_Event table (purging the data base on date or event type for example).
Yes it would be perfectly wise and acceptable, but just make sure that any operations you call on the linq objects based on reg_sql-generated tables don't interfere with the logic in any of the reg_sql-generated sprocs operating on dbo.aspnet_webEvents_Event table or related tables.