Here's what I can tell you from my experience on my E1505
Use the iDeneb 1.3 OSX 10.5.5, download it from a torrent. Options I used are Speedstep kernel SSE3, and select no video options at all, Intel ich fix, sigmatel 9200 sound, the first 2 selections for wireless, and the first selection in the ethernet list (broadcom 440x). Do NOT select the cpu=1 option, disable dual core in bios before installing, and install the additional apps. The kext installer, one of the additional apps is very helpful.
If you have a Dell 1390 wireless card it will work fine and detect as an airport card. Ethernet will work, you will have base video so you can complete the install. Sound will not work yet.
1. Is it possible to get my native resolution? or nobody is able to do that yet?
- No, not with that ATI card (either the x1300 or x1400). If you want native video, spend $50 and get a GeForce GO 7300 card for the E1505/6400 off ebay and swap it out. That's what I did. Then you can use NVinject to get solid video performance, hardware core, QE/GL supported. Although in my case, I can't get OpenGL to fully work. Xbench scores it really well and the OpenGL test displays ok, but the DVD player doesn't display properly. But everything else works besides the DVD player in full native res of the laptop screen.
2. How can I get my sound to work?
- After installing, run the Dell Post installer 1.3 (google for "Dell Laptop Post Installer v1.3.dmg" and you can DL it from mediafire). It has many good kexts for Dell laptops like enabling the sound buttons on the laptop, sound support (sound works after installing this sigmatel 9200 kext). It also has a safe update decrypt so you can DL apple updates without issue (so far so good for me!)
3. How can I connect to an external monitor? (I plug a VGA cable into my laptop and nothing happens. I have a MacBook and when I plug in an external monitor it immediately knows I connected it and will extend my screen to the monitor)
- Should work after you install the NVinject from the Dell post installer so your Nvidia graphics card is detected properly. Mine shows external video not connected in the about this mac screen but I haven't tried to connect a monitor.
4. Can I get both my processors to work? (are both working already even though it says "Number of Processors: 1" in my system profiler)
- The Dell post installer has additional kernels, I installed the 9.5 dual core kernel and on shutdown, I re-enabled the other core and both are detected and work fine. You need to install a speedstep kext which I was helped with earlier in this thread and it worked great.
5. Can I get two-finger scrolling to work?
- Not worth the hassle. So far installing touchpad kexts messes up the mouse for me. Tap selecting works fine tho and that's all I really cared about, just enable it in the mouse options.
6. Still no hope for wireless with the Intel Wireless card?
- Depends what card, I have the Dell 1390 and it works fine. You can probably get a 1390 if yours is the ABG or other card which doesn't seem to work from what I've read.
It will take some trial and error, but once you have a base iDeneb installed, plug in a USB drive formatted for OSX and backup with Time Machine so if you mess something up you can go back. Also make a backup of any kext you edit or replace and put it in a folder on that USB drive so if you mess it up you can put the original one back.
Lastly, when you install any kext or such make sure to repair permissions on the disk. You can use the tool installed by iDeneb or the disk utility to do this.
Good luck! If it was easy, everyone would be doing it

Missed a question.
The thing about the Inspiron E1505/6400 and the E1705 being limited to 2GB is a lie. You can install two 2GB DDR2 SODIMM's and it works fine. But unless you install a 64bit OS you will be limited to 3.3GB accessible. I have one of each model and have 4GB installed on each one
If you want 4GB go to newegg.com and search for "N82E16820231135" 4GB for $39.99 with free shipping and works perfectly in the E1505/E1705 Inspirons.