First of all, I'll give the information about my PC. Let's see.

Computer: Desktop
Processor: AMD Sempron 3400+ (2.00 GHz.).
Motherboard: ASRock.
Graphic card: NVIDIA GeForce 7050 PV / NVIDIA nForce 630a; 512 MB.
Hard disk: IDE.
DVD Recorder/Reader: IDE.
Sound chip: Realtek.
Ethernet chip: NVIDIA nForce Networking Controller. Also, I've D-Link DE-528 Ethernet Adapter.

I tried test iDeneb distribution. Once the installation was finnished (is it normal that lasts more than an hour?), it request that the PC is restarted. Once rebooted, when the hard disk boot, it gives something like: "boot error". It is said that I had installed Windows XP on the primary partition C and Mac was into the D. So, I installed Ubuntu 10.04 alongside Windows (on partition C), where at the end, with that MBR I could finally enter to Windows XP. But not only that, also it let me choose Mac 32-bit or Mac 64-bit. First to say 64-bit does nothing, then Mac 32-bit makes me a failure on the monitor: "The current resolution is not supported. This monitor has a maximum of 1280x1024 pixels.

Compatible? In that case, what I can do to install correctly Mac? What do you recommend?

Thanks.

PD: My English level isn't very high. Sorry if I expressed badly.

Check your custom selections during installation to match your hardware configuration.
It should not take that long. In some cases, the controller driver/kext is not quite compatible, particularly for early nForce series chipsets.