1. Format the disk differently. Nero InCD or Adaptec Direct CD will let you use the CD-RW like a floppy disk, then the files won't be read only. You can drag and drop files from Windows Explorer. Read-only files can be used for printing.
2. CD-RW disks are often unreliable for long-term storage. Look at alternatives like an external USB hard drive or USB pendrive, which also transfer data much faster. CD-R can also be used in multi-session mode so you can keep adding new files to the disk, but of course you cannot delete files. CD-R is a bit more reliable, and cheap.
I gave up using CD-RW because I was wasting too much time formatting them, and often found them unreadable after six months of use. For files that don't change I now use CD-R. For daily backup I copy compressed archives to a 256 Mbyte USB drive. For photos, you would need more space. An external hard disk might be best.