Ok,
I removed Firefox along with Thunderbird, cleaned up my hard drive then reinstalled everything up to FF 35.1 - nothing in e-bay changed.
I downloaded and mounted FF 46.0.1 portable to a small slave drive and logged into my e-bay account and it still did not change my ability to process a transaction.
.
A transparent box should appear in the page center, which merges with PayPal to complete the financial process, nothing on this transaction page works except when I upgrade from FF35.1 to FF36.1 - FF37.1, i can then select method of payment but when i click the submit button i get "NO" hover icon or striked out zero. It is as if all those functions are disabled from being used.
Maneuvering throughout e-bay or PayPal, no problems, everything seems perfectly normal, business as usual.
Just on the whole, e-bay's customer service suggested this morning to try a different browser like Google Chrome. I had just used e-bay's checkout like 3 weeks ago without a single problem.
Windows 2000 Professional
Internet Explorer 6
Windows 2000 Service Pack 4
Unofficial Updates Rollup v11 [daily 20130616]
Unofficial Updates Rollup 2
Unofficial Service Pack 5.1
Adobe Flash player 21.0.0.213
Firefox 37.0.2
Thanks in advance for all the help