In the YPSR folder, what is the purpose of the files in the "quarantine" sub-folder? Can I delete?
148132
They are probably quarantined because either A) it's a corrupted file  or B) the file has been infected with a virus....either way, if they are not important files I would delete them.
480933
Take a look through some of these since the filename was cut off in your question!!! Hope this helps!
163813
just delete all of the contents and stop using it.  Eventually it'll go away.
136671
When it asks you if you want to delete them, press delete. If you can't delete them you can delete them manually by finding their original files and delete them.\n\n\nMore infomation in the source.
1038490
So, you've been with this trojan for about 3 weeks!\nIf you are able to delete these(following) files then it's okay else read the note at the end.\nTROJAN DESCRIPTION: -\nFile Names Used: 28\nPaths Used: 12\nCommon File Name: WMIAPSV.EXE\nCommon Path: %WINDIR%&#92;\nVendor Information: No Vendor details specified\nWMIAPSV.EXE may use 28 or more path and file names, these are the most common:\n1 :%cache%&#92;content.ie5&#92;????????&#92;photoshop002[1]&#92;PHOTOSHOP002.PIF\n2 :%profiles%&#92;ian&#92;local sett...y 2 for picture005.zip&#92;PICTURE005.PIF\n3 :%profiles%&#92;kelli&#92;my documents&#92;my pictures&#92;kelli&#92;PICTURE005.PIF\n4 :%profiles%&#92;owner&#92;local se...or friendpic002[1].zip&#92;FRIENDPIC002.PIF\n5 :%profiles%&#92;the master&#92;loc...or photoshop002[1].zip&#92;PHOTOSHOP002.PIF\n6 :%temp%&#92;temporary director...or friendpic002[1].zip&#92;FRIENDPIC002.PIF\n7 :%WINDIR%&#92;COMHOST.EXE\n8 :?:&#92;SYSTEM VOLUME INFORMAT...F-164D8C1D9EF8}&#92;FIFOED&#92;A0116252.EXE\n9 :?:&#92;system volume informat...tore{?sid?}&#92;rp{folder}&#92;A0116252.EXE\nFile Name Structure: Normal\nFile and Path Structure: Suspicious, unusually high number of file and path combinations\nMoreover it also creates randomly named copies of itself.\nFor this you at least need to scan all activities since last three weeks. Use windows search service withe the limit date provided.\n\nNote: Download the FREEDos and install it.\nNow at boot time start freedos, then you may safely delete any of these files without boundations from DOS.\nElse you may use Quick heal's Emergency scan built for DOS.\n\nGood luck!
860556
Open the quarantine folder and delete.\nYou need to provide us the software you use to remove trojan.
750460
delete from the folder you saved, also from recycle bin.\n\nClear out all temporary files, cookies, history etc.
904270
you can remove any of them by formatin related local hard drive. must be C and D
234950
The file is used for a program called Ghost Script. I am not sure what the program is used for, the website for it is http://ghostscript.com/ .
896479
I use "CleanUp!" (see link below), you will not believe how easy it is and it is FREE. It also has a "demo mode" that you can run without deleting any files so you can learn how to determine what is safe to delete but in auto mode it NEVER created a single problem for me. Shaj is not completely wrong BUT if you use recognized and proven software it makes your life easier, actually YOU can do more harm trying to do it yourself if you don't know what to delete and what to keep. I'm in the software business, you would not believe the damage I have seen caused by users who don't know what they are doing.
309047
It is recommended to keep your suspicious programs in "Quarantine" area.\n\nprevention is better than cure.
179101
use safe mode. when you start your computer press f10 or f8. this will send you in to safe mode and you can delete that file.
1039244
It's a malformed file that contains harmful code that will cause problems to your computer.You shoul delete or quarantine that file.
97723
Just right click and delete.\nEmpty trash bin to completely get rid of it.
475207
download killbox and install it, run it and follow the instructions to remove the file, it eill remove it on the next reboot before windows loads it, that is why you can't delet it cause it is already loaded in memory. run regedit and remove any trace of it in the run and runonce folders\nthen hope it is gone
919772
Search for *.scr and *.jp*g, *.bmp and delete unwanted.
61605
If it was my computer, I would do it the old school way.  Open up a DOS window, switch to the directory with the files, do an\nAttrib filename -r  (that will remove the read only status) and then delete the file.