30GB, 60GB released last year is 5-generation iPod.
30GB, 80GB released last month is enhanced 5-gen iPod (5.5 generation?).
Quote:Apple Computer iPod with video (Enhanced Fifth-Generation 30GB/80GB)
Pros: Better-featured, less expensive updates to last year?s top-of-line iPods, featuring brighter 2.5? screens, superior video playback time, a new search feature, superior earbuds, and the option of up to 80GB of storage capacity. Fourteen- to 20-hour audio run time and three- to six and a half-hour video run times are supplemented by new downloadable movies and games, ever-growing collection of compatible car, home, and portable accessories, including several audio recorders. Fully compatible with existing 5G iPod cases. Top-priced model?s overall battery and storage capacity is wonderful.
Cons: Though improved in brightness and color accuracy over prior version, 2.5? screen is still too small for long-term video viewing, and users still must convert videos to one of only two compatible video formats. Unlike photos and videos, games can only be played on the iPod?s small screen, and sometimes with poorly implemented controls. Users must download iTunes themselves prior to using iPod. Interface is in need of further visual updating.
I think the 5g video skins should work with your iPod.