Windows 7 Wont Boot-No Installation Disk..

Okay My Prob Started Yesterday When I Restarted My Windows 7.. It Wouldn't Boot And Said Boot-mgr Is Missing. In Tennessee I Have An Instillation Disk To Fix This But I'm In Atlanta (Which Is Really Irrelevant Because My CD Drive Is A Useless Piece Of Crap And Doesn't Work) . All I Have Is My 4GB Usb. So I Was Wondering How Can I Install Win 7 Recovery, Or Anything To My Usb To Fix Boot-mgr While Using Sabayon (KDE) ..

Extra Stuff That Might Help.. I've Used This Usb To Install Both Win 7 and Sabayon, I Am Dual Booting My Sabayon And Win 7 (Using Grub), I've Already Tried To Download A Boot-mgr File For Win 7 But Cant Find One, I've Already Tried To Directly Boot The Win 7 Partition In Grub Using - root (hd0,1), makeactive, chainloader +1, boot - But It Gives Me The Same Boot-mgr Missing Error..

Anything At This Point Will Help Me Because I'm A Total Linux Newbie And Dont Know Pretty Much About Using It So I Dont Know How To Use It To Fix My Win 7!

Thanks Man, Thats Exactly What I'm Tryna Do.. But How Exactly Do U Do That In Sabayon Linux ... Thats 4 Windows N I Cant Get To My Windows. Im Using Sabayon KDE

I Tried Earlier And It Said Something Like "This Disk Is Not Bootable".. I Must Of Did It Wrong Cus I Used "This Disk" To Install WIndows.. Plus, Im Using Sabayon Linux So Its Gonna B A Lil Harder

Ohhhhhhh... I C What U Mean. Thanks 4 The Help.. Imma Try That Right Now!

D***! It Didn't Work... Well I Found This Site And I'm Downloading This Windows 7 Recovery Iso... It's Just The Files Windows Would Install TO A CD For Recovery And Boot Problems. But IM Sorta Confused As To The Exact Way TO Use These Files TO Make My Usb Boot Able... Any Insight ?