Need help creating redirects

[ged]

Hi, as you know, VBSEO is no longer a reliable choice for search engine optimization. So, I decided to uninstall it and use vBulletin 4's own SEO engine.

I've decided to redirect old VBSEO links but vbseo.com doesn't respond, they're offline because of database issues and I'm not sure they'll go online again.

So, my problem is this:

1) I want to redirect

http://www.dipsizkuyu.net/154-a/35830-air.html

to

http://www.dipsizkuyu.net/showthread.php?35830-Air

2) I want to redirect

http://www.dipsizkuyu.net/154-a/

to

http://www.dipsizkuyu.net/forumdisplay.php?154-A

What should I add to my .htaccess file to redirect showthread and forumdisplay links to redirect correctly to new ones?

Thank you very much.