Hello and welcome to MR
For the older Firmwares there was a bunch of tweaks and patches that allowed for installatiuon of apps that require Froyo or higher.
Unfortunately most of these don't work with the newer FW.
But you may try the port from PDN by Icewyng, that has got Market access and fakes 2.1 for the Market.
BUT: It's not an official release and you may lose your warranty if it goes bad
Another possibility is to downgrade to 2.0.6 and install all those patches, but those are also not official but at least accepted by various PB employees in Germany