keep getting "not enough disk space" with 2 hard drives

[sunni]

I have to harddrives, drive :C/ and drive D :/ drive c has the basic miniums and came with 16 gbs of space which is completely full with windows , then drive d has 136gbs and is 103gb of free space left
ANYTHING i try to download i try to make it go to Drive D but none the less i keep getting the error "not enough disk space"

this is a brand new system, that a friend whos good with computers built for me for my gaming needs, i have a

intel r core tom 2 quad cpu 6600 @ 2.40GHz 4 gb ram 64 bit operating system..

if you can help or need any info please let me know where i can find the info for you on the computer im pretty crappy with computers so i need all the help ican get

 

[sunni]

anyone have any ideas? this is getting really frustrating....

 

[slurp812]

The C: disk is too full. When downloading with IE, the file is first saved to %temp% then moved to the final location. You could change temp to a folder on D:. Create a temp folder on D, then Right click computer, properties, advanced system settings, environment settings and change both TMP and TEMP for user and system to d:\temp. You should also move swap to D: as well. This may make it usable. Maybe you could ask your friend to re-size the C: disk. 16 gigs really isn't enough ...