Sorry for your inconvenience.
Due to above reason (Windows can't mount ext3, ext4, etc filesystems) the reconfiguration of destination VM is not possible.
The only one way to succeed with Linux reconfiguration is to convert live Linux to VC/ESX destination. However the possibility to reconfig Linux is quite limited, you should check the Converter's user manual for your Linux distribution support.
In any case if Linux won't start, P2V or V2V conversions, you can attach and boot from live (distribution) CD to the VM, and do necessary steps manualy. Check the forum for these steps, most common problems and solutions with Linux distributions.
HTH
About simple copy of VMs file from one hypervisor (Fusion) to other (ESX) it's not always possible without some reconfiguration in VMX, some times change of VMDK type, etc... You should be experience user to do this 