You can add additional disk space by using the options. To do so,
- go to the My Websites page,
- click on Change package and modify, if necessary, the pre-selected package according to your needs.
- in the section, 2. Options, click on the More options link,
- enter the number of additional 100MB packs,
- and click on Next.
Once your purchase is confirmed, you will have access to the additional disk space.