I need to redirectsome .aspx pages from website A to specific pages on website B (.php pages), and then redirect the remaining pages in a specific folder on website A to the home page of website B eg:-

I then need to redirect the remaining .aspx pages in /folder/ to the home page on www.websiteB.com.

I'll be honest, I know very little about .aspx, so any help/guidance would be very much appreciated and if you can provide some very specific instructions, that would be great!