We used to have Win on this machine. No longer. i'm trying to recover the disk space by joining partition 6 and 7. Is this possible? If so, how should i go about doing it?
root@localhost frazelle09]# fdisk -l
Disco /dev/sda: 250.1 GB, 250059350016 bytes
6 heads, 63 sectors/track, 1292056 cylinders, 488397168 sectores en total
Units = sectores of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identificador del disco: 0x0393754d
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/sda1 * 0 0 0 0 Vacía
/dev/sda3 217388934 462618323 122614695 5 Extendida
/dev/sda5 217388997 242579231 12595117+ 83 Linux
/dev/sda6 242579295 250770869 4095787+ 82 Linux swap / Solaris
/dev/sda7 250770933 462618323 105923695+ 83 Linux
Have a great afternoon! 
You cant do that. Both partitions have completely different purposes and different formatting. What you can do is create a new primary partition as /dev/sda1, using all the empty space left from deleting Windows, and format it to a Linux filesystem, like ext3 or ext4, then use it as a data partition, or divide the empty space into as many as three primary partitions and use them for other Linux installations or whatever you wish.