[Gorby]

It sounds like it is something specifically related to your company's exchange server version or setting. I have used mogul previously and now touch pro with every custom rom posted here and had no problems with data push at all. What kind of an error you get? For my exchange server to work, I have to load two security certificates first that are used by my company's server (Go Daddy route certificates). You can check what certs your company is using by logging in thorugh outlook web access URL (owa.yourcompany.com) and clicking on the lock icon in the browser. That will tell you what certificate authority certs your exchange server is using. If they are not standard like in my case, they will not be included in the ROM by default so you just need to manually install them. Once I install them and connfigure my server in ActiveSync on my touch pro, the first time I connect I get a message "Server wants to enforce security.." (or something like that) and I click "Yes". After that, I have no problem getting my mail/appointments/tasks at all. Works the same with any ROM.

Hope it helps.