Microsoft has promised that future versions of the Smartphone Edition of Windows Mobile would include full document editing (actually, IIRC, they promised to quit making two wholly different versions, but I digress). In the meantime, Smartphone edition users can stop being so jealous of the rest of us as DocsToGo is coming soon for you. You still will live in a strange netherworld where copy and paste is a complex and dangerously advanced function not available to you elsewhere, but c'est la vie. One oddity: the DocsToGo preview has only been tested on a few devices and is some sort of pre-release - but it's also shipping with the new for-Corporate MotoQ Pro.
Anyhow, as a long-time PalmOS user, I can vouch for DocsToGo, they know their stuff. If this is anywhere near as professional as the PalmOS version, then it's something to celebrate.
Coming Soon - But Preview Available Now!
Word, Excel, PowerPoint & PDF files on your Motorola Q, Samsung BlackJack, T-Mobile Dash & Other Windows Mobile 5.0 Smartphones.