You really don't need a sd card, you can do everything with a usb, the only thing you use the sd card for is to install a radio with 2.4, us the usb cable, your gonna us it for almost everything else anyways.
best USB option is to start with olipro 1.2 here
http://forum.xda-developers.com/showthread.php?t=332381 then install the new Titan Radio ROM 3.42.50 here
http://www.geek-pages.com/rom/Titan%...%203.42.50.rar which is awsome, I get 2 bars in my house when I couldn't even get a signal with sprints crappy radio. You use RUU to install the radio which you get here
ftp://up.ppcgeeks.com/Titan/RUU/RUU.rar you extract the .nbh titan radio file and put it in the RUU folder where ever you extracted it to. Then you run the romupdateutility.exe and install the radio to the phone, reboot the phone and when it get's to the windows touch screen use active sync to install olipro 2.4 and boot back to the windows touch screen again(if you can't boot out of 2.4 use this
ftp://up.ppcgeeks.com/Titan/Users/Im...tan_exitbl.rar and make sure Wcesmgr.exe Wcescomm.exe Rapimgr.exe are all disabled in task manager)
Then run active sync from the windows touch screen and then cook up a rom, I personally am now a big fan of wm6.5 21501 which has been great so far, might upgrade to 21815. You have to use olipro 1.2 to install the new titan radio if you are using a usb cable, otherwise if you have a sd card you can just install olipro 2.4
ftp://up.ppcgeeks.com/Titan/Users/Im...rd-SPL-MFG.exe
and then install the titan radio with a >2gb sd card with titan on it in the bootloader without installing olipro 1.2, your choice. Then get build OS
http://ppckitchen.org/Downloads/BuildOS.msi and get cooking!