Yes, anything you could do with your Dell, you can do with the MDA.

I just got back from two weeks in Brazil and (after getting T-Mobile to FINALLY enable international roaming), it worked like a champ! I had no problems syncing with my exchange server in California, nor getting my personal email.

The only downsides I have found to this so far are:

1. Booting takes FOREVER. If you expect to check your email when taxing in after landing, forget it.
2. Sometimes it gets slow. Not sure why, but it has happened to me. I only have a couple of additional apps loaded, so i'm not sure what's going on.
3. Keyboard SUCKS. After coming from several years of Blackberry usage, it's really hard to get used to this.
4. Can't use it with one hand (could do this with my Blackberry)
5. No "lock now" key. On my Blackberry, there was an icon to lock right away, none exists on this.
6. No direct-to-device email address. The Blackberry has this, however this device does not. By direct-to-device, I mean that the Blackberry (at least T-mobiles incarnation) has an email address that is only for the device. This device does not have that.

Bottom line: i'm still carrying both my Blackberry and the MDA. I really like the MDA, but i'm still addicted to the Crackberry...