Again, you can use codes provided in the Links 2.0 Discussion forum...search for Spider Mod.
Also, there are two other MODS clearly linked in the Resource section:
goFetch
Links Spider Pro
These mods will "spider" your current web pages and extract the links information and put them into a .db file.
Another thing you can do is use MS Excel or Access to store the links/categories in separate spreadsheet/tables. Then export the data into a tab delimited text file. Then replace the tabs with pipe characters |. Save the exported files as links.db and categories.db.
Then you will have to update the numbers in the linksid.txt and categoryid.txt files to reflect the last record number in the database files you exported.
For more information on "offline editing", search for offline editing....
Regards,
Eliot Lee