Data Gone!! Win 7 boot

Hello!
Please help me I've been trying to sort this problem for three days but no use!!!!
Due to some reasons I inserted winxp bootable cd in my drive ( I thought that I'll have 'dual boot' thing, okay!)
but it didn't show any other drive other than C:. So I pressed F3 cuz I didn't want to disturb win7 as it was in installed in C: .Ok, now when I restarted compute, win7 didn't start it was only a blank screen!!. I tried to b repair it with the recovery and repair by booting with the win7 DVD it said "NO drives detected!!!!"
Then I thought that may be I should format the C: and then reinstall win7 again but when I tried to reinstall it again said "NO drives detected.
Then again I booted winxp cd thinking that maybe if could format C drive this way it will solve the problem but it's still the same. Now I'm afraid that what if my data stored in other drives is also deleted!!!!!!!!!!
I'm DEAD. PLEASE HELP ME!!!!

You said you aborted XP install when you saw only C drive was available - was this at the screen where you select where to install XP? Did you do anything other than abort the XP install?

When you booted into Win7 DVD to reinstall Win7, did you also abort that or did you choose anything other than abort?

Boot into the Win7 DVD now and use this method to copy out your data before you do anything else: Copy & Paste - in Windows Recovery Console

If your data is there Win7 should be reparable unless you did anything else besides these things mentioned.

After your data is copied out, download and burn to CD free Partition Wizard bootable CD, boot it, post back a camera snap of your drive map with listings. We need to know what the listings are on each partition, in particular which is System Active - most likely the 100mb System Reserved partition if you have it, or the Win7 partition itself. Then highlight the Win7 HD by clicking on it, from Disk tab select Rebuild MBR, Apply, Restart Computer, Report back.

Thanks a million for replying!!!!!!!
When I saw no option..... I booted with xp CD and formated the C drive. I thought that may be then I could do a fresh install. At this point I wasn't too much concerned about C: because my important data is on other drives I never store on C:. BUT after formatting it.. it didn't show any drives when booted with win7. and if booted with xp it is not showing my other drives. It is showing a RAW drive and two other drives which it says " windows xp cannot recognize the partition you selected"
All that I'm afraid about is....I had six partions ( I have one HDD and six partitions of it) but now shows only three two of them gives the above error and installing on the remaining one says needs to create partition in it.
Anyways... WHY IS IT SHOWING :
C:Partition1 (Unknown) 106501 MB (106501 MB free)
E:Partition2 (Unknown) 831050 MB (831050 MB free)
F:Partition3 (Unknown) 265613 MB (265612 MB free)
It shows this on xp setup srive choosing screen.
I didn't format the other drives why is it behaving this way???????
Please help

Did you play with BIOS set up?
Will HD show in BIOS?

Can you post a screen shot of Disk management?
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Since you formatted the C drive anyway, then reinstall Win7 to C and see if it sees your data on the other partitions. Post back the requested screenshot. Clean Install Windows 7

If your data is not there use free Partition Wizard bootable CD Recover Partition Wizard.

theog said:

Did you play with BIOS set up?
Will HD show in BIOS?

yes it shows in BIOS

Can you post a screen shot of Disk management

gregrocker said:

Since you formatted the C drive anyway, then reinstall Win7 to C and see if it sees your data on the other partitions. Post back the requested screenshot. Clean Install Windows 7

If your data is not there use free Partition Wizard bootable CD Recover Partition Wizard.

When I try to install win7 it says:

Try this:
SATA Driver - Load in Windows 7 or Vista Setup