Portable Offline Browser doesn't contain CD writing code itself, but it can prepare downloaded Web site (Project) for easy CD burning.
Please select the desired Project and click the Export button on the Ribbon - Home tab. This will copy loaded site to some directory which should be later burned to a CD-R or CD-RW disk. In the Export dialog it is recommended to select "Joliet - CD-R 64 symbols" in the Filenames format field.
You can also make AutoRun CD, which will be automatically browsed when you insert the disk. Make sure that the "Create contents file" is checked for easier browsing from the CD.
Now click the Export button and wait until the process completes. Then you can write the exported directory contents using your favorite CD burning program.