I've read all the codex support on this, modified my permalinks structure to get good SEO, edited the .htaccess file as requested (created it in the www directory), and then found none of the linking worked for any archive item etc. on my wordpress. I backed my changes all out and it works with the 'ol ?p=27 or whatever, but this probably won't give the the SEO I want.
Once the permalinks template is changed, do I need to do anything to get my blog links working again? Does this permalink change also affect trackbacks? They aren't working beyond ?p=27 either.
This is for 1.5 according to my readme file. I've downloaded a fresh zip, but the readme still says 1.5. I haven't installed the fresh version yet.