Sue,
If you've been using floppys, the step-up to CDR will solve your storage problems. Now, if you had been using CDRs and needed to upgrade, you might go to a portable hard-drive.

Floppys hold a maximum of 1.4MB. As Jimmy said, CDRs hold up to 700MB. The math is easy.

A portable hardrive can hold from about 40 GIGABYTES up to....I don;t even know. Last summer, a friend suggested I get one. I bought a Maxtor 80 GB harddrive for less than $100....in fact I think it was $80 at Circus City or Best Buy or something. It works off of a simple USB cable. 80GB equates to approximately 110 CDRs.