I am considering purchasing STO, however I have a few questions that need to be answered first

1. I'm purchasing the CD game from Ebay. Now, I know that it comes with 30 days free, and then you have renew it, but how do I renew it when the time comes?
2. Once STO is installed, what happens then? Do I just update (if needed) and then play? Or is there a register-game I need to do?
3. I'm also considering buying some computer hardware (new motherboard, graphics card, processor), and of course, I'll be reinstalling Windows XP and all that. But how will I be able to get STO back on there? Do I just use the CD to install, (most likely update after), then log in and play?
I know the questions may seem obvious, and pretty silly, but, oh well.
Comments
Just reinstall the game. When it brings up the website and asks for the key, just ignore it and close the browser, and the installation will continue... (Just remember your User Account and Password for the launcher to get back in...)
you could just reinstall ST:O and let it patch again if you prefer the long wait. the least you need to backup is the piggs folder but the game will still need to patch a few other files. the best way imho is to backp the whole ST:O install folder then install ST:O again on your new XP build then just replace the new install with your backup.. simples only obvious to those who know the answer but if you need to ask the question in the first place the answers are obviously not that obvious
Now i may be mistaken, but isn't EBay a auction site? Dosen't that mean the the copy is probably used? If so the key is locked to a account, preventing you getting both into the game or even the 30 day trial period.?
Star Trek Online Minimum System Requirements
-OS: Windows® XP SP2 / Windows Vista® / Windows® 7 (32 or 64 bit)
-CPU: Intel® Core2 Duo 1.8 GHz, AMD Athlon X2 3800+
-Memory: 1 GB Ram
-Video: NVIDIA GeForce 7950/ ATI Radeon X1800/ Intel HD Graphics
-Sound: DirectX® 9.0c Compatible Soundcard
-DirectX® 9.0c or Higher
-Hard Drive: 10 GB Free Disk Space
-Disc Drive: 6X DVD-ROM
-Network: Broadband Internet Connection is Required
Star Trek Online Recommended System Requirements:
-OS: Windows® XP SP2 / Windows Vista® / Windows® 7 (32 or 64 bit)
-CPU: Intel® E8400 Core2 Duo or AMD Athlon X2 5600+
-Memory: 2 GB Ram+
-Video: NVIDIA GeForce 8800/ ATI Radeon HD 3850+
-Sound: DirectX® 9.0c Compatible Soundcard
-DirectX® 9.0c or Higher
-Hard Drive: 10 GB Free Disk Space
-Disc Drive: 6X DVD-ROM
-Network: Broadband Internet Connection is Required