Convert from embedded ICC-profile to target profile

[Joon4s]

Hello,
I have few problems with nconvert.

1)
How can I use nconvert to convert images to target icc-profile from the embedded profile in the image? They way I do it now works just fine with srgb-pictures, but AdobeRGB and others come out wonky. I'm using this script:
C:\Nconvert\nconvert.exe -out jpeg -icc_out "c:\nconvert\target.icm" *.*

2)
How can I get nconvert to convert images to different a folder with original filename? I'm using nconvert from context menu, and the closest I've come of a working version is this:
C:\Nconvert\nconvert.exe -o $ICC\ -out jpeg -icc_out "c:\nconvert\target.icc" *.*

I'd like it to create a subfolder called ICC in the source folder and convert pictures there.

3)
Can I get nconvert to overwrite read only files? When I copy images from cd's they're always read only, and nconvert can't overwrite. I have a temporary solution, where I added "attrib -r *.*" to context menu. Or is there a way to execute attrib -r *.* automatically before the nconvert script? I tried everything but I just couldn't get two different commands to work in the same context menu item. I even tried to add both command to a bat-file, and running it from context menu but it didn't work at all.

4)
When I try to order a license the share it site says the program is version 4.51. Can't I get the latest version, or is the site out of date? Also, if I have a license, does it cover future updates as well?