Portable App Development

I am currently working on making LilyPond portable. LilyPond is a text based musical notation software There's a few specific features I want the portable version to have, and there's a couple stumbles I've had already when trying to make it portable.

Hey,

I Have Absolutly No Clue On How To Create A Portable Apps And I Really Dont Want To Get Into The Deep Stuff About HOW to create a portable app

is there any program out there that will allow me to select a program and that can turn it into a portable app?

i would also like it if i could add a startup picture like when u start portableapps.com 's apps. ( but thats optional, i dont need that )

please help me out here.
tyvm portableapp'ers out there

-------- ADDED June 12th 07 10:30 AM EST

Hi,
I'm a new comer in portable apps development. I read the threads and some of the codes here, and I'm curious what would happen if the following things happened:
1. what if the user disconnected the USB-key before he end the portable application? In that case, i think the configure files and registry keys cannot be written back.
2. what if the machine suddenly crashed, for example if the power suddenly goes down. In that case, will the registry keys, folders and files be left on the host machine?

Thanks in advance.

Ping

AppLauncher is now Portable Startup Utility.
I rearranged the settings dialog and added a additional functions.

Setup:
Download PSU to your portable drive.
Modify your autorun.inf to run psu.exe -all

Usage:
psu.exe will open the settings window
psu.exe -all will apply all saved settings
psu.exe -clean will cleanup portable settings applied to host PC
(environment variable, drive substitution, and run configured cleanup apps)

VB.NET version changes

2.0.20.0
Added browse button to temp files option
Added autorun checkbox to autorun shortcut with launchpad

2.0.19.0
Added temp files location, choose what folder to use for temp files.

VB6 version changes

2.0.0.14
Added working directory option
Added argument option
Added check on Name and Path fields (buttons disabled unless both are filled in)
Rearranged advanced options to match .NET version

2.0.0.12 (Doesn't have all the advanced options of .NET version)

With the portable version of A Note I made, (in the Beta Forums) everything's working almost as perfectly as could be. There is, however, a couple questions I have. I have them in the beta post as well, but I don't think many people have looked there. They are:

1.Is there a way to copy a whole folder of settings from Application Data to the
portable device without it taking up to thirty seconds?

Am pretty new to PA but have found them invaluable. I have found some nice PA.com skins and themes but do not know how to install them. Can anyone give me a "step by step" on this? Would greatly appreciate it.

Currently I am using VB and VB.NET to write my utilities.
Portable Startup Utility and Shortcut Creator 4U3

Both VB and VB.NET have their issues as far as functionality or portability.

I'm looking for pro's and con's of learning C++ or Delphi for creating portable application and utilities.

Any input would be much appreciated.

Does anyone know how to get the current drive letter with NSIS?

I built a portable app based on launcher template from this forum, let's call it MyAppPortable.exe. Everything works fine, only problem is, that MyAppPortable.exe can not distinguish between MyApp.exe started under it's control resp. started outside of it's control, i.e. from host computer.

It keeps executing until the last instancy of MyApp.exe has been terminated, and this can be the one launched from the host computer.