So after a week of wrestling with my first-ever linux install, i finally get up and running, only to find out i installed the 32-bit version.

Apparently i have the nasty habit of "lazy-reading", picking out key-words, too lazy or too impatient to focus and carefully comb through info.

I have a UEFI system which i wanted to use, though had to settle for Legacy Mode because i was using the 32-bit Slack14.1.

I bought the Slackware 14.1 CD SET from the slackware.com store, thinking it had both versions (32-bit & 64-bit). My bad. (along with the book and t-shirt, but those are working out fine, plus the Mayan T is awesome)

I could install slackware 14.1 64-bit on the same drive as the 32-bit, like any other dual-boot correct?

Are there any other ways i could "upgrade" (in a sense) my 32-bit to 64-bit, or is a clean install the best bet?

thankyou

Indeed, the 64 bit version only comes on DVD and the DVD set has both versions.
Yes, works without any problems. Though you will also have to use legacy mode, since you can't dual-boot UEFI and non-UEFI.
No (good and working) way to upgrade from 32 to 64 bit, so a fresh install is needed.

Yes. Just make one stanza for each system in /etc/lilo.conf.

A clean install will be a lot safer and faster.

PS. Too late.

UEFI is overrated anyways