The problem now is that the NTC needs the money if it is to begin to put some order into the new Libya, if it is to begin to rule Libya. To establish its authority, it must provide law and order and restore public services, including basic items like water and electricity, to show the Libyan people the fruits of the rebellion. At least part of the NTC is in the process of moving from Benghazi to Tripoli, establishing control of the capital and mitigating the perception of Libyans that the rebellion is an eastern affair, as opposed to a national one.
The difficult part is that the NTC is still disorganized. Its structure is unclear and its chain of command and, thus, ability to accept responsibility including for money, is unclear to the point of concern that it doesn’t exist.