[COLUG] HD Partition Problem

[Stephen P. Molnar]

I have just upgraded my Linux machine to OpenSUSE 10.3 64 bit and have a 
partition problem on one of my hard drives.  Rather than risk really messing 
it up by plunging ahead I would like to ask for help.

Here is the problem, according to Krusader/Mountman:

Could not mount device.
The reported error was:
mount: wrong fs type, bad option, bad superblock on /dev/sdb3,
missing codepage or helper program, or other error
(aren't you trying to mount an extended partition,
instead of some logical partition inside?)

fdisk /dev/sdb gives me

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000bdd37

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         262     2104483+  82  Linux swap / Solaris
/dev/sdb2   *         263        2873    20972857+  83  Linux
/dev/sdb3            2874       30401   221118660    f  W95 Ext'd (LBA)
/dev/sdb5            2874        5484    20972826   83  Linux
/dev/sdb6            5485       30401   200145771   83  Linux

the problem is with dev/sdb3.  What should the fstab line to mount the 
partition read?  Or alternately, how do I reformat the partition for ext3?  
The current partition is a hold over from a MS Win machine.

Thanks in advance.