Upgrade from version 1.6.1

What do I have to do to upgrade from the 1.6.1 version to 1.7?

Just overwrite the files?

yup, thats about it.

also, remove the Scheduled task before uploading the new product, as the new version creates the task automatically (if you do'nt remove the old oone, you'll have 2)

Thanks! And what do I do with the rewriterule in the .htaccess file included with this version. Because VBSEO has it's own...

You don't need to change .htaccess since you have vBSEO installed.