Ok, well at the moment I don't have any floppies, and since my rather limiting situation, I can't get any till Monday.

Code:
root@1[knoppix]# cfdisk -Pt
Partitionstabelle von /dev/hda

         ---Starting---      ----Ending----    Start     Number of
 # Flags Head Sect Cyl   ID  Head Sect Cyl     Sector    Sectors
-- ----- ---- ---- ---- ---- ---- ---- ---- ----------- -----------
 1  0x00    1    1    0 0xDE  254   63    3          63       64197
 2  0x80    0    1    4 0x07  254   63 1023       64260   156167865
 3  0x00    0    0    0 0x00    0    0    0           0           0
 4  0x00    0    0    0 0x00    0    0    0           0           0
There's the cfdisk dump, and here comes the mbr backup file I found:
Code:
00000000   33 C0 8E D0  BC 00 7C FB  50 07 50 1F  3.....|.P.P.
0000000C   FC BE 1B 7C  BF 1B 06 50  57 B9 E5 01  ...|...PW...
00000018   F3 A4 CB BD  BE 07 B1 04  38 6E 00 7C  ........8n.|
00000024   09 75 13 83  C5 10 E2 F4  CD 18 8B F5  .u..........
00000030   83 C6 10 49  74 19 38 2C  74 F6 A0 B5  ...It.8,t...
0000003C   07 B4 07 8B  F0 AC 3C 00  74 FC BB 07  ......<.t...
00000048   00 B4 0E CD  10 EB F2 88  4E 10 E8 46  ........N..F
00000054   00 73 2A FE  46 10 80 7E  04 0B 74 0B  .s*.F..~..t.
00000060   80 7E 04 0C  74 05 A0 B6  07 75 D2 80  .~..t....u..
0000006C   46 02 06 83  46 08 06 83  56 0A 00 E8  F...F...V...
00000078   21 00 73 05  A0 B6 07 EB  BC 81 3E FE  !.s.......>.
00000084   7D 55 AA 74  0B 80 7E 10  00 74 C8 A0  }U.t..~..t..
00000090   B7 07 EB A9  8B FC 1E 57  8B F5 CB BF  .......W....
0000009C   05 00 8A 56  00 B4 08 CD  13 72 23 8A  ...V.....r#.
000000A8   C1 24 3F 98  8A DE 8A FC  43 F7 E3 8B  .$?.....C...
000000B4   D1 86 D6 B1  06 D2 EE 42  F7 E2 39 56  .......B..9V
000000C0   0A 77 23 72  05 39 46 08  73 1C B8 01  .w#r.9F.s...
000000CC   02 BB 00 7C  8B 4E 02 8B  56 00 CD 13  ...|.N..V...
000000D8   73 51 4F 74  4E 32 E4 8A  56 00 CD 13  sQOtN2..V...
000000E4   EB E4 8A 56  00 60 BB AA  55 B4 41 CD  ...V.`..U.A.
000000F0   13 72 36 81  FB 55 AA 75  30 F6 C1 01  .r6..U.u0...
000000FC   74 2B 61 60  6A 00 6A 00  FF 76 0A FF  t+a`j.j..v..
00000108   76 08 6A 00  68 00 7C 6A  01 6A 10 B4  v.j.h.|j.j..
00000114   42 8B F4 CD  13 61 61 73  0E 4F 74 0B  B....aas.Ot.
00000120   32 E4 8A 56  00 CD 13 EB  D6 61 F9 C3  2..V.....a..
0000012C   49 6E 76 61  6C 69 64 20  70 61 72 74  Invalid part
00000138   69 74 69 6F  6E 20 74 61  62 6C 65 00  ition table.
00000144   45 72 72 6F  72 20 6C 6F  61 64 69 6E  Error loadin
00000150   67 20 6F 70  65 72 61 74  69 6E 67 20  g operating
0000015C   73 79 73 74  65 6D 00 4D  69 73 73 69  system.Missi
00000168   6E 67 20 6F  70 65 72 61  74 69 6E 67  ng operating
00000174   20 73 79 73  74 65 6D 00  00 00 00 00   system.....
00000180   00 00 00 00  00 00 00 00  00 00 00 00  ............
0000018C   00 00 00 00  00 00 00 00  00 00 00 00  ............
00000198   00 00 00 00  00 00 00 00  00 00 00 00  ............
000001A4   00 00 00 00  00 00 00 00  00 00 00 00  ............
000001B0   00 00 00 00  00 2C 44 63  9E 6E C9 9D  .....,Dc.n..
000001BC   00 00 00 01  01 00 DE FE  3F 03 3F 00  ........?.?.
000001C8   00 00 C5 FA  00 00 80 00  01 04 07 FE  ............
000001D4   FF FF 04 FB  00 00 B9 EE  4E 09 00 00  ........N...
000001E0   00 00 00 00  00 00 00 00  00 00 00 00  ............
000001EC   00 00 00 00  00 00 00 00  00 00 00 00  ............
000001F8   00 00 00 00  00 00 55 AA               ......U.
Now I have googled my error, and I didn't find much. I got 4 results googling MBR 123FA:, and lots of results googling Can't find NTLDR, but all of them say with XP to boot up with the XP CD, which I don't have.

And right now I would look under the hood of my machine, but I really think I might just mess something up and have a dead computer. I've just never done it before.