Canon has released a new version of Digital Photo Professional which supports earlier camera models, including the EOS 10D and the original Digital Rebel. (thanks Scott)
From Canon USA:
Changes for Digital Photo Professional 4.8.30 for Windows :
- Newly supported EOS D2000 *, EOS D6000 *, EOS D30, EOS D60, EOS 10D, EOS Kiss Digital / EOS Digital REBEL / EOS 300D Digital.
- Added Partial adjustments functions (to only 64bit OS).
* Can now handle CR2 files converted with the CR2 Converter.
Download: Canon Digital Photo Professional 4.8.30