Buying SSD for Acer Aspire 7745G

Hello,
this is my first time on this forum and I apologize in advance if I'll write/do something stupid. Anyway, here is my problem.

1) I'm looking for a SSD for my laptop Acer Aspire 7745G and I'm really confused about some stuff. I chose Samsung 830 128GB model. Before ordering it from hoh.de (I'm not german btw), I'm looking if there is anything else I need to buy. Here is where my confusion comes from. Some people are saying I need to buy additional connector and bracket, some say I just have to put it in (that's what she said, heh) and it will work. I Googled for my specific Acer model, but no luck. So, can you tell me for sure if I need it? I'd also want to know, if there are special connectors just for 7745G model (best help here would be if you'd just point me to ebay which connector to buy).

2) Second problem is easier to solve. After I buy SSD and put it in the laptop (oh, important stuff here: I'll not put my current HDD out, just add SSD), I want to fresh install Windows 7 (no, I dont want to use those softwares, that clone data from HDD to SSD, because HDD is too big) on SSD (currently, OS is on HDD, ofcourse). I guess for that I need to:
a) backup data from HDD
b) format HDD
c) put SSD in
d) put CD with OS in and install Windows on SSD

I hope this is the right order? I also heard it's nice if I somehow format SSD before using it. Is that right? How do I do that (I suppose it's not the same as with HDDs)?

I'll probably ask more stuff, but for now, this is all. I'm really looking forward to you answers. As it is now, I cant even buy SSD yet, because I'm just not confident enough.