What is the best freeware dvd burning software?

Image Burn
The Official ImgBurn Website (http://www.imgburn.com/)

Steps to burn an ISO-image (to CD , DVD , HD DVD , Blu-Ray)

1. Browse to the ISO-file you want to burn
2. Select the ISO file and right-mouse-click now
3. Choose "Burn using ImgBurn"

Burn4Free
free dvd copy cd dvd burner audio data shrink dvd - burn4free freeware (http://www.burn4free.com/)
Teps to burn an ISO-image

1. Start Burn4Free
2. Choose "Drive"
3. Choose "Burn ISO"
4. Browse to the ISO file you want to burn on cd/dvd
5. Select the ISO file
6. Confirm the dialog now with "Yes"

PS: the language of this program can be changed to many other languages (even Dutch ;-) ). Check it out!

If you don't feel like burning them look up daemon tools.. you can mount disk using your hard drive and run them without using a cd... easy way to start games and don't need the disk :)