if you always want to have the same path, you could also use subst (CMD command).For example: 
subst <usbdriveletter>:\myportablesoftware v:

[download]
like that you could "remount" a directory as an drive letter. If you pick a higher drive letter it's likely that it never will be taken. If you configure your software for v: it will always work, you'll only have to call subst with a correct directory before trying to execute the scripts.

In reply to Re^2: Running Perl standalone, e.g. from a USB key by rminner
in thread Running Perl standalone, e.g. from a USB key by TheFluffyOne

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