Sr. Program Manager/Backup Security Mgr.

We are currently in the process of looking into several options on getting rid of our current Mainframe Computer, which can nolonger be supported by IBM, the (i.e. hardware and Software).

Options:
1. Buy new Mainframe, (Not and option)
2. Buy a smaller Mainframe, (long shop, but possible).
3. Keep this one and hope nothing goes wrong (likely).
4. Looking buying computer time from a company that supports mainframe processing. (Possible)

Here lies the problem I cannot locate such companies, I search the I-net for two days. Can you help me find companies that sell/least time for mainfram processing.